diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7aa211785..26acbe613 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,7 +6,7 @@
 
 ### Breaking Changes
 
-_None_
+- The `ios_build_preflight` and `android_build_preflight` actions have been removed. [#773]
 
 ### New Features
 
diff --git a/MIGRATION.md b/MIGRATION.md
index 78ec06f49..894c88369 100644
--- a/MIGRATION.md
+++ b/MIGRATION.md
@@ -1,5 +1,9 @@
 # Migration Instructions for Major Releases
 
+## From 14.x to 15.0.0
+
+- Remove calls to `ios_build_preflight` and `android_build_preflight` actions from your Fastfiles as they've been removed. They also applied legacy `.configure` secrets and ran dependency/tool checks, so you need to preserve any behavior your project still needs explicitly.
+
 ## From 13.x to 14.0.0
 
 ### Metadata Source Actions
diff --git a/lib/fastlane/plugin/wpmreleasetoolkit/actions/android/android_build_preflight.rb b/lib/fastlane/plugin/wpmreleasetoolkit/actions/android/android_build_preflight.rb
deleted file mode 100644
index 56db305e2..000000000
--- a/lib/fastlane/plugin/wpmreleasetoolkit/actions/android/android_build_preflight.rb
+++ /dev/null
@@ -1,56 +0,0 @@
-# frozen_string_literal: true
-
-module Fastlane
-  module Actions
-    class AndroidBuildPreflightAction < Action
-      def self.run(params)
-        # Validate mobile configuration secrets
-        other_action.configure_apply
-
-        # Check gems and pods are up to date. This will exit if it fails
-        begin
-          Action.sh('bundle check')
-        rescue StandardError
-          UI.user_error!("You should run 'bundle install' to make sure gems are up to date")
-          raise
-        end
-
-        begin
-          Action.sh('command -v bundletool > /dev/null')
-        rescue StandardError
-          UI.user_error!("bundletool is required to build the APKs. Install it with 'brew install bundletool'")
-          raise
-        end
-      end
-
-      #####################################################
-      # @!group Documentation
-      #####################################################
-
-      def self.description
-        'Clean the environment to ensure a safe build'
-      end
-
-      def self.details
-        'Clean the environment to ensure a safe build'
-      end
-
-      def self.available_options
-      end
-
-      def self.output
-      end
-
-      def self.return_value
-      end
-
-      def self.authors
-        ['Automattic']
-      end
-
-      def self.is_supported?(platform)
-        platform == :android
-      end
-    end
-  end
-end
diff --git a/lib/fastlane/plugin/wpmreleasetoolkit/actions/ios/ios_build_preflight.rb b/lib/fastlane/plugin/wpmreleasetoolkit/actions/ios/ios_build_preflight.rb
deleted file mode 100644
index 170402683..000000000
--- a/lib/fastlane/plugin/wpmreleasetoolkit/actions/ios/ios_build_preflight.rb
+++ /dev/null
@@ -1,79 +0,0 @@
-# frozen_string_literal: true
-
-module Fastlane
-  module Actions
-    class IosBuildPreflightAction < Action
-      def self.run(params)
-        # Validate mobile configuration secrets
-        other_action.configure_apply
-
-        Action.sh("cd .. && rm -rf #{params[:derived_data_path]}")
-
-        # Verify that ImageMagick exists on this machine and can be called from the command-line.
-        # Internal Builds use it to generate the App Icon as part of the build process
-        begin
-          Action.sh('which convert')
-        rescue StandardError
-          UI.user_error!("Couldn't find ImageMagick. Please install it by running `brew install imagemagick`")
-          raise
-        end
-
-        # Verify that Ghostscript exists on this machine and can be called from the command-line.
-        # Internal Builds use it to generate the App Icon as part of the build process
-        begin
-          Action.sh('which gs')
-        rescue StandardError
-          UI.user_error!("Couldn't find Ghostscript. Please install it by running `brew install ghostscript`")
-          raise
-        end
-
-        # Check gems and pods are up to date. This will exit if it fails
-        begin
-          Action.sh('bundle check')
-        rescue StandardError
-          UI.user_error!("You should run 'rake dependencies' to make sure gems are up to date")
-          raise
-        end
-
-        other_action.cocoapods
-      end
-
-      #####################################################
-      # @!group Documentation
-      #####################################################
-
-      def self.description
-        'Clean the environment to ensure a safe build'
-      end
-
-      def self.details
-        'Clean the environment to ensure a safe build'
-      end
-
-      def self.available_options
-        [
-          FastlaneCore::ConfigItem.new(
-            key: :derived_data_path,
-            description: "The path to the DerivedData directory for the project. Should match what's used in the `gym` action",
-            type: String,
-            default_value: '~/Library/Developer/Xcode/DerivedData'
-          ),
-        ]
-      end
-
-      def self.output
-      end
-
-      def self.return_value
-      end
-
-      def self.authors
-        ['Automattic']
-      end
-
-      def self.is_supported?(platform)
-        %i[ios mac].include?(platform)
-      end
-    end
-  end
-end