diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 61b671a..5a030ab 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,33 +10,60 @@ jobs:
   check_format:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: crystal-lang/install-crystal@v1
         with:
-          crystal: 1.4.1
+          crystal: latest
       - run: shards install
       - run: crystal tool format --check
       - run: ./bin/ameba
   webless_specs:
     strategy:
+      fail-fast: false
       matrix:
-        crystal_version:
-          - 1.4.0
-          - latest
-          - nightly
-    runs-on: ubuntu-latest
+        include:
+          - os: ubuntu-latest
+            crystal: latest
+          - os: windows-latest
+            crystal: latest
+          - os: macos-latest
+            crystal: latest
+    runs-on: ${{matrix.os}}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
+      - uses: browser-actions/setup-chrome@v1
+        with:
+          chrome-version: stable
+        if: matrix.os == 'windows-latest'
       - uses: crystal-lang/install-crystal@v1
         with:
           crystal: ${{matrix.crystal_version}}
-      - run: shards install
-      - run: LUCKYFLOW_DRIVER=webless crystal spec --tag ~headless_chrome
+      - run: shards install --ignore-crystal-version --skip-executables --skip-postinstall
+      - run: crystal spec --tag ~headless_chrome
+        env:
+          LUCKYFLOW_DRIVER: webless
   selenium_specs:
-    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: ubuntu-latest
+            crystal: latest
+          - os: windows-latest
+            crystal: latest
+          - os: macos-latest
+            crystal: latest
+    runs-on: ${{matrix.os}}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
+      - uses: browser-actions/setup-chrome@v1
+        with:
+          chrome-version: stable
+        if: matrix.os == 'windows-latest'
       - uses: crystal-lang/install-crystal@v1
-      - run: shards install
-      - run: LUCKYFLOW_DRIVER=headless_chrome crystal spec --tag ~webless
-  
+        with:
+          crystal: ${{matrix.crystal_version}}
+      - run: shards install --ignore-crystal-version --skip-executables --skip-postinstall
+      - run: crystal spec --tag ~webless
+        env:
+          LUCKYFLOW_DRIVER: headless_chrome
diff --git a/shard.yml b/shard.yml
index 05db093..b0a4091 100644
--- a/shard.yml
+++ b/shard.yml
@@ -10,21 +10,21 @@ license: MIT
 
 dependencies:
   selenium:
-    github: matthewmcgarvey/selenium.cr
-    version: ~> 0.10.0
+    github: crystal-loot/selenium.cr
+    version: ~> 0.12.0
   webdrivers:
-    github: matthewmcgarvey/webdrivers.cr
-    version: ~> 0.4.1
+    github: crystal-loot/webdrivers.cr
+    version: ~> 0.4.2
   habitat:
     github: luckyframework/habitat
     version: ~> 0.4.7
   webless:
-    github: matthewmcgarvey/webless
+    github: crystal-loot/webless
     version: ~> 0.1.0
   html5:
     github: naqvis/crystal-html5
-    version: ~> 0.4.0
+    version: ~> 0.5.0
 development_dependencies:
   ameba:
     github: crystal-ameba/ameba
-    version: ~> 1.1.0
+    version: ~> 1.4.3
diff --git a/spec/lucky_flow_spec.cr b/spec/lucky_flow_spec.cr
index 3d3a112..4e92afc 100644
--- a/spec/lucky_flow_spec.cr
+++ b/spec/lucky_flow_spec.cr
@@ -129,7 +129,7 @@ describe LuckyFlow do
   it "can submit form" do
     handle_route("/foo") do |context|
       <<-HTML
-        <p flow-id="result">#{context.request.body.not_nil!.gets_to_end}</p>
+        <p flow-id="result">#{context.request.body.as(IO).gets_to_end}</p>
       HTML
     end
 
@@ -170,7 +170,7 @@ describe LuckyFlow do
   it "submits dates appropriately", tags: "headless_chrome" do
     handle_route("/foo") do |context|
       <<-HTML
-        <p flow-id="result">#{context.request.body.not_nil!.gets_to_end}</p>
+        <p flow-id="result">#{context.request.body.as(IO).gets_to_end}</p>
       HTML
     end
 
@@ -444,7 +444,7 @@ private class FakeProcess
   end
 end
 
-private def expect_to_raise_without_suggestion
+private def expect_to_raise_without_suggestion(&)
   error = expect_raises LuckyFlow::ElementNotFoundError do
     yield
   end
diff --git a/src/lucky_flow.cr b/src/lucky_flow.cr
index 33c7447..c3cc8bd 100644
--- a/src/lucky_flow.cr
+++ b/src/lucky_flow.cr
@@ -71,7 +71,7 @@ class LuckyFlow
     driver.maximize_window
   end
 
-  def with_fullsized_page(&block)
+  def with_fullsized_page(&)
     original_size = driver.window_size
     expand_page_to_fullsize
     yield
diff --git a/src/lucky_flow/driver.cr b/src/lucky_flow/driver.cr
index 053cd16..f7e550b 100644
--- a/src/lucky_flow/driver.cr
+++ b/src/lucky_flow/driver.cr
@@ -19,6 +19,6 @@ abstract class LuckyFlow::Driver
 
   macro unsupported
     method_name = \{{ @def.name.stringify }}
-    raise NotSupportedByDriverError.new("#{self.class}##{ method_name }")
+    raise NotSupportedByDriverError.new("#{self.class}##{method_name}")
   end
 end
diff --git a/src/lucky_flow/element.cr b/src/lucky_flow/element.cr
index 6567ba1..d6c9c7d 100644
--- a/src/lucky_flow/element.cr
+++ b/src/lucky_flow/element.cr
@@ -73,6 +73,6 @@ abstract class LuckyFlow::Element
 
   macro unsupported
     method_name = \{{ @def.name.stringify }}
-    raise NotSupportedByElementError.new("#{self.class}##{ method_name }")
+    raise NotSupportedByElementError.new("#{self.class}##{method_name}")
   end
 end
diff --git a/src/lucky_flow/selenium/chrome/driver.cr b/src/lucky_flow/selenium/chrome/driver.cr
index 8bffda7..6cae6e8 100644
--- a/src/lucky_flow/selenium/chrome/driver.cr
+++ b/src/lucky_flow/selenium/chrome/driver.cr
@@ -5,7 +5,7 @@ module LuckyFlow::Selenium
       ::Selenium::Driver.for(:chrome, service: service)
     end
 
-    def initialize(&block)
+    def initialize(&)
       super ::Selenium::Chrome::Capabilities.new
       yield @capabilities.as(::Selenium::Chrome::Capabilities)
     end
diff --git a/src/lucky_flow/webless/element.cr b/src/lucky_flow/webless/element.cr
index f7a6aac..b43f27d 100644
--- a/src/lucky_flow/webless/element.cr
+++ b/src/lucky_flow/webless/element.cr
@@ -29,7 +29,7 @@ class LuckyFlow::Webless::Element < LuckyFlow::Element
   def click
     if link?
       method = attribute("data-method") || "get"
-      driver.as(LuckyFlow::Webless::Driver).follow(method, attribute("href").not_nil!)
+      driver.as(LuckyFlow::Webless::Driver).follow(method, attribute("href").to_s)
     elsif submits? && (f = form)
       LuckyFlow::Webless::Form.new(f, @inner_element).submit(driver.as(LuckyFlow::Webless::Driver))
     elsif checkable?