diff --git a/Dockerfile.updater b/Dockerfile.updater
index 55cd518296c..eefee4e3077 100644
--- a/Dockerfile.updater
+++ b/Dockerfile.updater
@@ -46,6 +46,9 @@ bundle install
 # executes the package manager outputs to every job log
 COPY --chown=dependabot:dependabot updater/config/.yarnrc updater/config/.npmrc $DEPENDABOT_HOME/
 
+# For Yarn Berry we can set this via an environment variable
+ENV NODE_EXTRA_CA_CERTS=/etc/ssl/certs/ca-certificates.crt
+
 # END: HACKY WORKAROUND FOR NPM GIT INSTALLS SPAWNING CHILD PROCESS
 
 # Add project
diff --git a/npm_and_yarn/lib/dependabot/npm_and_yarn/helpers.rb b/npm_and_yarn/lib/dependabot/npm_and_yarn/helpers.rb
index 0c0525b2657..832de4beabd 100644
--- a/npm_and_yarn/lib/dependabot/npm_and_yarn/helpers.rb
+++ b/npm_and_yarn/lib/dependabot/npm_and_yarn/helpers.rb
@@ -23,6 +23,21 @@ def self.npm_version_numeric(lockfile_content)
       def self.run_yarn_commands(*commands)
         # We never want to execute postinstall scripts
         SharedHelpers.run_shell_command("yarn config set enableScripts false")
+        if (http_proxy = ENV.fetch("HTTP_PROXY", false))
+          SharedHelpers.run_shell_command("yarn config set httpProxy #{http_proxy}")
+        end
+        if (https_proxy = ENV.fetch("HTTPS_PROXY", false))
+          SharedHelpers.run_shell_command("yarn config set httpsProxy #{https_proxy}")
+        end
+        if (ca_file_path = ENV.fetch("NODE_EXTRA_CA_CERTS", false))
+          output = SharedHelpers.run_shell_command("yarn --version")
+          major_version = Version.new(output).major
+          if major_version >= 4
+            SharedHelpers.run_shell_command("yarn config set httpsCaFilePath #{ca_file_path}")
+          else
+            SharedHelpers.run_shell_command("yarn config set caFilePath #{ca_file_path}")
+          end
+        end
         commands.each { |cmd| SharedHelpers.run_shell_command(cmd) }
       end
     end