diff --git a/README.md b/README.md
index 682e1bb1..b8029be1 100644
--- a/README.md
+++ b/README.md
@@ -74,7 +74,7 @@ There are a lot of pieces of the GitHub API to cover. Here are the ones that nee
 - [ ] [Pages]()
 - [ ] [Projects]()
 - [x] [PubSubHubbub](https://octokit-cr.github.io/octokit.cr/Octokit/Client/PubSubHubbub.html)
-- [ ] [PullRequests]()
+- [x] [PullRequests](https://octokit-cr.github.io/octokit.cr/Octokit/Client/PullRequests.html)
 - [x] [RateLimit](https://octokit-cr.github.io/octokit.cr/Octokit/Client/RateLimit.html)
 - [ ] [Reactions]()
 - [ ] [Refs]()
diff --git a/shard.yml b/shard.yml
index 6e921d6a..d5cae59c 100644
--- a/shard.yml
+++ b/shard.yml
@@ -1,5 +1,5 @@
 name: octokit
-version: 0.2.5
+version: 0.3.0
 
 authors:
   - Grant Birkinbine
diff --git a/spec/acceptance/acceptance.cr b/spec/acceptance/acceptance.cr
index ca08987a..83cf34ac 100644
--- a/spec/acceptance/acceptance.cr
+++ b/spec/acceptance/acceptance.cr
@@ -4,6 +4,8 @@ require "spec"
 
 describe Octokit do
   github = Octokit.client
+  github.auto_paginate = true
+  github.per_page = 100
 
   describe ".get" do
     context "when fetching info about the octokit.cr repo" do
@@ -23,4 +25,94 @@ describe Octokit do
       end
     end
   end
+
+  describe "pull requests" do
+    context "fetches closed pull requests" do
+      pulls = github.pull_requests("octokit-cr/octokit.cr", state: "closed").records
+
+      it "should find at least one closed pull request" do
+        pulls.size.should be > 0
+      end
+
+      it "should fetch the title of the first closed pull request" do
+        pulls.first.title.should_not be_nil
+      end
+    end
+
+    context "fetches pull request comments" do
+      comments = github.pull_request_comments("octokit-cr/octokit.cr", 15).records
+
+      it "should find at least one comment" do
+        comments.size.should be > 0
+      end
+
+      it "should fetch the body of the first comment" do
+        comments.first.body.should_not be_nil
+      end
+
+      it "should fetch the diff_hunk of the first comment" do
+        comments.first.diff_hunk.should_not be_nil
+      end
+
+      it "should fetch the path of the first comment" do
+        comments.first.path.should_not be_nil
+      end
+
+      it "should fetch the position of the first comment" do
+        comments.first.position.should_not be_nil
+      end
+
+      it "should fetch the ID of the first comment" do
+        comments.first.id.should_not be_nil
+      end
+    end
+
+    context "fetches pull request files" do
+      files = github.pull_request_files("octokit-cr/octokit.cr", 15).records
+
+      it "should find at least one file" do
+        files.size.should be > 0
+      end
+
+      it "should fetch the filename of the first file" do
+        files.first.filename.should_not be_nil
+      end
+
+      it "should fetch the sha of the first file" do
+        files.first.sha.should_not be_nil
+      end
+
+      it "should fetch the status of the first file" do
+        files.first.status.should_not be_nil
+      end
+
+      it "should fetch the additions of the first file" do
+        files.first.additions.should_not be_nil
+      end
+
+      it "should fetch the deletions of the first file" do
+        files.first.deletions.should_not be_nil
+      end
+
+      it "should fetch the contents_url of the first file" do
+        files.first.contents_url.should_not be_nil
+      end
+
+      it "should fetch the patch of the first file" do
+        files.first.patch.should_not be_nil
+      end
+
+      it "should fetch the sha of the second file" do
+        files[1].sha.should_not be_nil
+      end
+    end
+
+    context "merged pull request" do
+      pull = github.pull_merged?("octokit-cr/octokit.cr", 15)
+
+      it "checks if the pull request is merged and finds that it is" do
+        pull.should eq true
+      end
+    end
+  end
 end
diff --git a/src/octokit/client.cr b/src/octokit/client.cr
index 21b31698..ce68c142 100644
--- a/src/octokit/client.cr
+++ b/src/octokit/client.cr
@@ -110,6 +110,7 @@ module Octokit
     include Octokit::Client::Issues
     include Octokit::Client::Markdown
     include Octokit::Client::PubSubHubbub
+    include Octokit::Client::PullRequests
     include Octokit::Client::Users
     include Octokit::Client::RateLimit
     include Octokit::Client::Repositories
diff --git a/src/octokit/client/pull_requests.cr b/src/octokit/client/pull_requests.cr
index e69de29b..039f00ab 100644
--- a/src/octokit/client/pull_requests.cr
+++ b/src/octokit/client/pull_requests.cr
@@ -0,0 +1,411 @@
+require "uri"
+require "../models/repos"
+require "../models/pulls"
+require "../models/commits"
+require "../models/pull_comments"
+require "../models/repo_commits"
+
+module Octokit
+  class Client
+    # Methods for the Pull Requests API
+    #
+    # All "repo" params are constructed in the format of `<organization>/<repository>`
+    #
+    # **See Also:**
+    # - [https://docs.github.com/en/rest/pulls/pulls?apiVersion=2022-11-28](https://docs.github.com/en/rest/pulls/pulls?apiVersion=2022-11-28)
+
+    module PullRequests
+      # :nodoc:
+      alias Repository = Models::Repository
+      # :nodoc:
+      alias PullRequest = Octokit::Models::PullRequest
+      # :nodoc:
+      alias Commit = Octokit::Models::Commit
+      # :nodoc:
+      alias PullRequestComment = Octokit::Models::PullRequestComment
+      # :nodoc:
+      alias CommitFile = Octokit::Models::CommitFile
+
+      # Valid filters for PullRequests
+      FILTERS = ["all", "assigned", "created", "mentioned", "subscribed"]
+
+      # Valid states for PullRequests
+      STATES = ["all", "open", "closed"]
+
+      # Valid sort for PullRequests
+      SORTS = ["created", "updated", "comments"]
+
+      # Valid directions in which to sort PullRequests
+      DIRECTIONS = ["asc", "desc"]
+
+      # The default options for listing pull requests
+      DEFAULTS = {
+        state:     "open",
+        sort:      "created",
+        direction: "desc",
+      }
+
+      # List pull requests for a repository
+      #
+      # **See Also:**
+      # - [https://developer.github.com/v3/pulls/#list-pull-requests](https://developer.github.com/v3/pulls/#list-pull-requests)
+      #
+      # **Examples:**
+      #
+      # ```
+      # Octokit.pull_requests("crystal-lang/crystal")
+      # Octokit.pull_requests("crystal-lang/crystal", state: "closed")
+      # ```
+      def pull_requests(repo : String, **options) : Paginator(PullRequest)
+        validate_options(options)
+        paginate(
+          PullRequest,
+          "#{Repository.path(repo)}/pulls",
+          options: {params: DEFAULTS.merge(options)}
+        )
+      end
+
+      alias_method :pull_requests, :pulls
+
+      # Create a pull request
+      #
+      # **See Also:**
+      # - [https://developer.github.com/v3/pulls/#create-a-pull-request](https://developer.github.com/v3/pulls/#create-a-pull-request)
+      #
+      # **Examples:**
+      #
+      # ```
+      # Octokit.create_pull_request("crystal-lang/crystal", "master", "new-branch", "Title", "Body")
+      # ```
+      def create_pull_request(repo : String, base : String, head : String, title : String, body : String, **options)
+        options = {base: base, head: head, title: title, body: body}.merge(options)
+        post "#{Repository.path repo}/pulls", {json: options}
+      end
+
+      # Create a pull request for an issue
+      #
+      # **See Also:**
+      # - [https://developer.github.com/v3/pulls/#create-a-pull-request](https://developer.github.com/v3/pulls/#create-a-pull-request)
+      #
+      # **Examples:**
+      #
+      # ```
+      # Octokit.create_pull_request_for_issue("crystal-lang/crystal", "master", "new-branch", 123)
+      # ```
+      def create_pull_request_for_issue(repo : String, base : String, head : String, issue : Int32, **options)
+        options = {base: base, head: head, issue: issue}.merge(options)
+        post "#{Repository.path repo}/pulls", {json: options}
+      end
+
+      # Update a pull request
+      #
+      # **See Also:**
+      # - [https://developer.github.com/v3/pulls/#update-a-pull-request](https://developer.github.com/v3/pulls/#update-a-pull-request)
+      #
+      # **Examples:**
+      #
+      # ```
+      # Octokit.update_pull_request("crystal-lang/crystal", 123, title: "New Title", body: "New Body")
+      # ```
+      def update_pull_request(repo : String, number : Int64, **options)
+        patch "#{Repository.path repo}/pulls/#{number}", {json: options}
+      end
+
+      # Close a pull request
+      #
+      # **See Also:**
+      # - [https://developer.github.com/v3/pulls/#update-a-pull-request](https://developer.github.com/v3/pulls/#update-a-pull-request)
+      #
+      # **Examples:**
+      #
+      # ```
+      # Octokit.close_pull_request("crystal-lang/crystal", 123)
+      # ```
+      def close_pull_request(repo : String, number : Int64, **options)
+        options = {state: "closed"}.merge(options)
+        patch "#{Repository.path repo}/pulls/#{number}", {json: options}
+      end
+
+      # List commits on a pull request
+      #
+      # **See Also:**
+      # - [https://developer.github.com/v3/pulls/#list-commits-on-a-pull-request](https://developer.github.com/v3/pulls/#list-commits-on-a-pull-request)
+      #
+      # **Examples:**
+      #
+      # ```
+      # Octokit.pull_request_commits("crystal-lang/crystal", 123)
+      # ```
+      def pull_request_commits(repo : String, number : Int64, **options) : Paginator(Commit)
+        paginate(
+          Commit,
+          "#{Repository.path(repo)}/pulls/#{number}/commits",
+          options: {params: options}
+        )
+      end
+
+      alias_method :pull_request_commits, :pull_commits
+
+      # List review comments on a pull request
+      #
+      # This method applies to pull request review comments. Pull request review comments are NOT the same as standard comments left on PRs - those are issue comments.
+      #
+      # **See Also:**
+      # - [https://developer.github.com/v3/pulls/comments/#list-comments-on-a-pull-request](https://developer.github.com/v3/pulls/comments/#list-comments-on-a-pull-request)
+      #
+      # **Examples:**
+      #
+      # ```
+      # Octokit.pull_requests_comments("crystal-lang/crystal", 123)
+      # ```
+      def pull_requests_comments(repo : String, number : Int64, **options) : Paginator(PullRequestComment)
+        paginate(
+          PullRequestComment,
+          "#{Repository.path(repo)}/pulls/#{number}/comments",
+          options: {params: options}
+        )
+      end
+
+      alias_method :pull_requests_comments, :reviews_comments
+
+      # List comments on a pull request
+      #
+      # This method applies to pull request review comments. Pull request review comments are NOT the same as standard comments left on PRs - those are issue comments.
+      #
+      # **See Also:**
+      # - [https://developer.github.com/v3/pulls/comments/#list-comments-on-a-pull-request](https://developer.github.com/v3/pulls/comments/#list-comments-on-a-pull-request)
+      #
+      # **Examples:**
+      #
+      # ```
+      # Octokit.pull_request_comments("crystal-lang/crystal", 123)
+      # ```
+      def pull_request_comments(repo : String, number : Int64, **options) : Paginator(PullRequestComment)
+        paginate(
+          PullRequestComment,
+          "#{Repository.path(repo)}/pulls/#{number}/comments",
+          options: {params: options}
+        )
+      end
+
+      alias_method :pull_request_comments, :pull_comments
+      alias_method :pull_request_comments, :review_comments
+
+      # Get a single comment on a pull request
+      #
+      # This method applies to pull request review comments. Pull request review comments are NOT the same as standard comments left on PRs - those are issue comments.
+      #
+      # **See Also:**
+      # - [https://developer.github.com/v3/pulls/comments/#get-a-single-comment](https://developer.github.com/v3/pulls/comments/#get-a-single-comment)
+      #
+      # **Examples:**
+      #
+      # ```
+      # Octokit.pull_request_comment("crystal-lang/crystal", 456)
+      # ```
+      def pull_request_comment(repo : String, comment_id : Int64, **options)
+        get "#{Repository.path(repo)}/pulls/comments/#{comment_id}", {params: options}
+      end
+
+      alias_method :pull_request_comment, :pull_comment
+      alias_method :pull_request_comment, :review_comment
+
+      # Create a comment on a pull request
+      #
+      # This method applies to pull request review comments. Pull request review comments are NOT the same as standard comments left on PRs - those are issue comments.
+      #
+      # **See Also:**
+      # - [https://developer.github.com/v3/pulls/comments/#create-a-comment](https://developer.github.com/v3/pulls/comments/#create-a-comment)
+      #
+      # - repo (String) — A GitHub repository
+      # - number (Integer) — Pull request number
+      # - body (String) — Comment content
+      # - commit_id (String) — Sha of the commit to comment on
+      # - path (String) — Relative path of the file to comment on
+      # - line (Integer) — Line number in the diff to comment on
+      # - side (String) — Side of the diff that the comment applies to (LEFT or RIGHT)
+      # - start_line (Integer) — Start line for multi-line comments
+      # - start_side (String) — Start side for multi-line comments (LEFT or RIGHT)
+      # - in_reply_to (Integer) — ID of the review comment to reply to
+      # - subject_type (String) — Level at which the comment is targeted (line or file)
+      #
+      # **Examples:**
+      #
+      # ```
+      # Octokit.create_pull_request_comment("crystal-lang/crystal", 123, "Comment body", "commit_id", "path/to/file.txt", 1, side: "RIGHT")
+      # ```
+      def create_pull_request_comment(
+        repo : String,
+        number : Int64,
+        body : String,
+        commit_id : String,
+        path : String,
+        line : Int32,
+        **options
+      )
+        options = {
+          body:      body,
+          commit_id: commit_id,
+          path:      path,
+          line:      line,
+        }.merge(options)
+        post "#{Repository.path repo}/pulls/#{number}/comments", {json: options}
+      end
+
+      alias_method :create_pull_request_comment, :create_pull_comment
+      alias_method :create_pull_request_comment, :create_review_comment
+
+      # Create a reply to a comment on a pull request
+      #
+      # **See Also:**
+      # - [https://developer.github.com/v3/pulls/comments/#create-a-reply-to-a-comment](https://developer.github.com/v3/pulls/comments/#create-a-reply-to-a-comment)
+      #
+      # **Examples:**
+      #
+      # ```
+      # Octokit.create_pull_request_comment_reply("crystal-lang/crystal", 123, "Comment body", 456)
+      # ```
+      def create_pull_request_comment_reply(repo : String, number : Int64, body : String, in_reply_to : Int64, **options)
+        options = {body: body, in_reply_to: in_reply_to}.merge(options)
+        post "#{Repository.path repo}/pulls/#{number}/comments", {json: options}
+      end
+
+      alias_method :create_pull_request_comment_reply, :create_pull_reply
+      alias_method :create_pull_request_comment_reply, :create_review_reply
+
+      # Update a comment on a pull request
+      #
+      # **See Also:**
+      # - [https://developer.github.com/v3/pulls/comments/#update-a-comment](https://developer.github.com/v3/pulls/comments/#update-a-comment)
+      #
+      # **Examples:**
+      #
+      # ```
+      # Octokit.update_pull_request_comment("crystal-lang/crystal", 456, "New comment body")
+      # ```
+      def update_pull_request_comment(repo : String, comment_id : Int64, body : String, **options)
+        options = {body: body}.merge(options)
+        patch "#{Repository.path repo}/pulls/comments/#{comment_id}", {json: options}
+      end
+
+      alias_method :update_pull_request_comment, :update_pull_comment
+      alias_method :update_pull_request_comment, :update_review_comment
+
+      # Delete a comment on a pull request
+      #
+      # **See Also:**
+      # - [https://developer.github.com/v3/pulls/comments/#delete-a-comment](https://developer.github.com/v3/pulls/comments/#delete-a-comment)
+      #
+      # **Examples:**
+      #
+      # ```
+      # Octokit.delete_pull_request_comment("crystal-lang/crystal", 456)
+      # ```
+      def delete_pull_request_comment(repo : String, comment_id : Int64, **options)
+        delete "#{Repository.path repo}/pulls/comments/#{comment_id}", {params: options}
+      end
+
+      alias_method :delete_pull_request_comment, :delete_pull_comment
+      alias_method :delete_pull_request_comment, :delete_review_comment
+
+      # List files on a pull request
+      #
+      # **See Also:**
+      # - [https://developer.github.com/v3/pulls/#list-pull-requests-files](https://developer.github.com/v3/pulls/#list-pull-requests-files)
+      #
+      # **Examples:**
+      #
+      # ```
+      # Octokit.pull_request_files("crystal-lang/crystal", 123)
+      # ```
+      def pull_request_files(repo : String, number : Int64, **options) : Paginator(CommitFile)
+        paginate(
+          CommitFile,
+          "#{Repository.path(repo)}/pulls/#{number}/files",
+          options: {params: options}
+        )
+      end
+
+      alias_method :pull_request_files, :pull_files
+
+      # Update a pull request branch
+      #
+      # **See Also:**
+      # - [https://developer.github.com/v3/pulls/#update-a-pull-request-branch](https://developer.github.com/v3/pulls/#update-a-pull-request-branch)
+      #
+      # **Examples:**
+      # ```
+      # Octokit.update_pull_request_branch("crystal-lang/crystal", 123)
+      # ```
+      def update_pull_request_branch(repo : String, number : Int64, **options) : Bool
+        boolean_from_response(
+          :put,
+          "#{Repository.path(repo)}/pulls/#{number}/update-branch"
+        )
+      end
+
+      # Merge a pull request
+      #
+      # **See Also:**
+      # - [https://developer.github.com/v3/pulls/#merge-a-pull-request](https://developer.github.com/v3/pulls/#merge-a-pull-request)
+      #
+      # **Examples:**
+      #
+      # ```
+      # Octokit.merge_pull_request("crystal-lang/crystal", 123, "Commit message")
+      # ```
+      def merge_pull_request(repo : String, number : Int64, commit_message : String, **options)
+        options = {commit_message: commit_message}.merge(options)
+        put "#{Repository.path repo}/pulls/#{number}/merge", {json: options}
+      end
+
+      # Check if a pull request has been merged
+      #
+      # **See Also:**
+      # - [https://developer.github.com/v3/pulls/#get-if-a-pull-request-has-been-merged](https://developer.github.com/v3/pulls/#get-if-a-pull-request-has-been-merged)
+      #
+      # **Examples:**
+      #
+      # ```
+      # Octokit.pull_merged?("crystal-lang/crystal", 123)
+      # ```
+      def pull_merged?(repo : String, number : Int64, **options) : Bool
+        boolean_from_response(
+          :get,
+          "#{Repository.path(repo)}/pulls/#{number}/merge",
+          options: {params: options}
+        )
+      end
+
+      alias_method :pull_merged?, :pull_request_merged?
+
+      # Validate options for filtering issues and log a warning if an incorrect
+      # filter is used.
+      protected def validate_options(options)
+        if filter = options[:filter]?
+          unless FILTERS.includes?(filter.to_s)
+            octokit_warn "'#{filter}' is not a valid Issue filter. Valid values are: #{FILTERS}"
+          end
+        end
+
+        if state = options[:state]?
+          unless STATES.includes?(state.to_s)
+            octokit_warn "'#{state}' is not a valid Issue state. Valid values are: #{STATES}"
+          end
+        end
+
+        if sort = options[:sort]?
+          unless SORTS.includes?(sort.to_s)
+            octokit_warn "'#{sort}' is not a valid Issue sort. Valid values are: #{SORTS}"
+          end
+        end
+
+        if direction = options[:direction]?
+          unless DIRECTIONS.includes(direction.to_s)
+            octokit_warn "'#{direction}' is not a valid Issue sort direction. Valid values are: #{DIRECTIONS}"
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/src/octokit/connection.cr b/src/octokit/connection.cr
index b0d6fac7..e9aed413 100644
--- a/src/octokit/connection.cr
+++ b/src/octokit/connection.cr
@@ -16,6 +16,9 @@ module Octokit
     # Header keys that can be passed in options hash to {#get},{#head}
     CONVENIENCE_HEADERS = Set{"accept", "content_type"}
 
+    # Successful status codes from PUT/POST/PATCH requests
+    SUCCESSFUL_STATUSES = [201, 202, 204]
+
     # Make a HTTP GET request
     def get(url, options = nil)
       request "get", url, make_options(options)
@@ -114,7 +117,7 @@ module Octokit
       @agent = nil
     end
 
-    protected def request(method, path, options = nil)
+    protected def request(method : Symbol | String, path : String, options = nil)
       path = File.join(endpoint, path) unless path.nil? || path.starts_with?("http")
       options = options ? @connection_options.merge(options) : @connection_options
       @last_response = response = agent.request(verb: method.to_s, uri: path, options: options)
@@ -122,7 +125,7 @@ module Octokit
       response.body
     end
 
-    protected def request(method, path, options = nil, &)
+    protected def request(method : Symbol | String, path : String, options = nil, &)
       path = File.join(endpoint, path) unless path.nil? || path.starts_with?("http")
       options = options ? @connection_options.merge(options) : @connection_options
       @last_response = response = agent.request(verb: method, uri: path, options: options)
@@ -132,9 +135,9 @@ module Octokit
     end
 
     # Executes the request, checking if it was successful
-    protected def boolean_from_response(method, path, options = nil)
-      request(method, path, options)
-      @last_response.not_nil!.status_code == 204
+    protected def boolean_from_response(method : Symbol, path : String, options : NamedTuple | Nil = nil) : Bool
+      request(method, path, make_options(options))
+      @last_response.not_nil!.status_code.in?(SUCCESSFUL_STATUSES)
     rescue Error::NotFound
       false
     end
@@ -146,7 +149,7 @@ module Octokit
       end
     end
 
-    protected def make_options(options)
+    protected def make_options(options) : Halite::Options?
       return if options.nil?
       options.is_a?(Halite::Options) ? options : Halite::Options.new(**options)
     end
@@ -331,28 +334,30 @@ module Octokit
       # pages.fetch_all
       # pages.last? # => Bool
       # ```
-      def last?
+      def last? : Bool
         @current_page == @total_pages
       end
 
       # Checks if the paginator is empty.
-      def empty?
+      def empty? : Bool
         @records.empty?
       end
 
       # Utility method to set the `@total_pages` variable.
       private def set_total_pages!
-        return 0 if @client.last_response.nil?
+        return @total_pages = 0 if @client.last_response.nil?
         if links = @client.last_response.try(&.links)
-          return 0 unless links["last"]?
+          unless links["last"]?
+            @total_pages = 1
+            return
+          end
           if target = links["last"].target
             if match = target.match(/page=([0-9]+)/)
               @total_pages = match[1].to_i
             end
-          else
           end
         else
-          0
+          @total_pages = 1
         end
       end
     end
diff --git a/src/octokit/default.cr b/src/octokit/default.cr
index 16fc2785..b18b80d2 100644
--- a/src/octokit/default.cr
+++ b/src/octokit/default.cr
@@ -36,7 +36,7 @@ module Octokit
     end
 
     # Default access token from ENV
-    def access_token
+    def access_token : String?
       ENV["OCTOKIT_ACCESS_TOKEN"]?
     end
 
@@ -76,7 +76,7 @@ module Octokit
     end
 
     # Default options for `Halite::Options`
-    def connection_options
+    def connection_options : Halite::Options
       Halite::Options.new(
         headers: {
           accept:     default_media_type,
@@ -90,7 +90,7 @@ module Octokit
     end
 
     # Default GitHub username for Basic Auth from ENV
-    def login
+    def login : String?
       ENV["OCTOKIT_LOGIN"]?
     end
 
@@ -100,12 +100,12 @@ module Octokit
     end
 
     # Default GitHub password for Basic Auth from ENV
-    def password
+    def password : String?
       ENV["OCTOKIT_PASSWORD"]?
     end
 
     # Default pagination page size from ENV
-    def per_page
+    def per_page : Int32?
       page_size = ENV["OCTOKIT_PER_PAGE"]?
       page_size.to_i if page_size
     end
@@ -117,7 +117,7 @@ module Octokit
     end
 
     # Default SSL verify mode from ENV
-    def ssl_verify_mode
+    def ssl_verify_mode : Int32
       # 0 is OpenSSL::SSL::NONE
       # 1 is OpenSSL::SSL::PEER
       # the standard default for SSL is PEER which requires a server certificate check on the client
@@ -125,18 +125,19 @@ module Octokit
     end
 
     # Default User-Agent header string from ENV or `USER_AGENT`
-    def user_agent
+    def user_agent : String
       ENV["OCTOKIT_USER_AGENT"]? || USER_AGENT
     end
 
     # Default web endpoint from ENV or `WEB_ENDPOINT`
-    def web_endpoint
+    def web_endpoint : String
       ENV["OCTOKIT_WEB_ENDPOINT"]? || WEB_ENDPOINT
     end
 
     # Default logger
     def logger
-      Log.setup(:warn)
+      log_level = ENV["OCTOKIT_LOG_LEVEL"]?.to_s.upcase || "INFO".to_s.upcase
+      Log.setup(log_level)
       ::Log.for(self)
     end
   end
diff --git a/src/octokit/models/commits.cr b/src/octokit/models/commits.cr
index ba5d5690..743752ec 100644
--- a/src/octokit/models/commits.cr
+++ b/src/octokit/models/commits.cr
@@ -12,24 +12,24 @@ module Octokit
     struct Commit
       Octokit.rest_model(
         sha: String,
-        author: CommitAuthor,
-        committer: CommitAuthor,
-        message: String,
-        tree: Tree,
-        parents: Array(Commit),
-        stats: CommitStats,
+        author: CommitAuthor?,
+        committer: CommitAuthor?,
+        message: String?,
+        tree: Tree?,
+        parents: Array(Commit)?,
+        stats: CommitStats?,
         html_url: String,
         url: String,
-        verification: SignatureVerification,
-        node_id: String
+        verification: SignatureVerification?,
+        node_id: String?
       )
     end
 
     struct CommitAuthor
       Octokit.rest_model(
-        date: String,
-        name: String,
-        email: String,
+        date: String?,
+        name: String?,
+        email: String?,
 
         login: String
       )
diff --git a/src/octokit/models/pull_comments.cr b/src/octokit/models/pull_comments.cr
index bbb639cf..b71615c0 100644
--- a/src/octokit/models/pull_comments.cr
+++ b/src/octokit/models/pull_comments.cr
@@ -4,7 +4,7 @@ module Octokit
       Octokit.rest_model(
         id: Int64,
         node_id: String,
-        in_reply_to: Int64,
+        in_reply_to: Int64?,
         body: String,
         path: String,
         diff_hunk: String,
diff --git a/src/octokit/models/pulls.cr b/src/octokit/models/pulls.cr
index 32b86360..0e698318 100644
--- a/src/octokit/models/pulls.cr
+++ b/src/octokit/models/pulls.cr
@@ -1,3 +1,6 @@
+require "../core_ext/time"
+require "./issue_labels"
+
 module Octokit
   module Models
     struct PullRequest
@@ -6,24 +9,24 @@ module Octokit
         number: Int32,
         state: String,
         title: String,
-        body: String,
+        body: String?,
         created_at: {type: Time, converter: Time::ISO8601Converter},
         updated_at: {type: Time, converter: Time::ISO8601Converter},
-        closed_at: String,
-        merged_at: String,
-        labels: Array(Label),
+        closed_at: String?,
+        merged_at: String?,
+        labels: Array(Label)?,
         user: User,
         draft: Bool,
-        merged: Bool,
-        mergeable: Bool,
-        mergeable_state: String,
-        merged_by: String,
+        merged: Bool?,
+        mergeable: Bool?,
+        mergeable_state: String?,
+        merged_by: String?,
         merge_commit_sha: String,
-        comments: Int32,
-        commits: Int32,
-        additions: Int32,
-        deletions: Int32,
-        changed_files: Int32,
+        comments: Int32?,
+        commits: Int32?,
+        additions: Int32?,
+        deletions: Int32?,
+        changed_files: Int32?,
         url: String,
         html_url: String,
         issue_url: String,
@@ -33,22 +36,22 @@ module Octokit
         commits_url: String,
         comments_url: String,
         review_comment_url: String,
-        review_comments: Int32,
-        assignee: User,
-        assignees: Array(User),
-        milestone: Milestone,
-        maintainer_can_modify: Bool,
+        review_comments: Int32?,
+        assignee: User?,
+        assignees: Array(User)?,
+        milestone: Milestone?,
+        maintainer_can_modify: Bool?,
         author_association: String,
         node_id: String,
         requested_reviewers: Array(User),
 
         requested_teams: Array(Team),
 
-        links: PRLinks,
+        links: PRLinks?,
         head: PullRequestBranch,
         base: PullRequestBranch,
 
-        active_lock_reason: String
+        active_lock_reason: String?
       )
     end
 
@@ -76,7 +79,7 @@ module Octokit
         label: String,
         ref: String,
         sha: String,
-        repo: Repository,
+        repo: Repository?,
         user: User
       )
     end
diff --git a/src/octokit/models/repo_commits.cr b/src/octokit/models/repo_commits.cr
index a457e67d..b7719997 100644
--- a/src/octokit/models/repo_commits.cr
+++ b/src/octokit/models/repo_commits.cr
@@ -33,11 +33,11 @@ module Octokit
         deletions: Int32,
         changes: Int32,
         status: String,
-        patch: String,
+        patch: String?,
         blob_url: String,
         raw_url: String,
         contents_url: String,
-        previous_filename: String
+        previous_filename: String?
       )
     end
 
diff --git a/src/octokit/version.cr b/src/octokit/version.cr
index f00d8126..db2becd1 100644
--- a/src/octokit/version.cr
+++ b/src/octokit/version.cr
@@ -1,3 +1,3 @@
 module Octokit
-  VERSION = "0.2.5"
+  VERSION = "0.3.0"
 end
diff --git a/src/octokit/warnable.cr b/src/octokit/warnable.cr
index c8f5c203..db829c9f 100644
--- a/src/octokit/warnable.cr
+++ b/src/octokit/warnable.cr
@@ -5,7 +5,7 @@ module Octokit
     # OCTOKIT_SILENT is set to true.
     def octokit_warn(message)
       unless !!ENV["OCTOKIT_SILENT"]?
-        Octokit.logger.warn(message)
+        @logger.warn { message }
       end
     end
   end