diff --git a/modules/openapi-generator/src/main/resources/dart-dio/gitignore.mustache b/modules/openapi-generator/src/main/resources/dart-dio/gitignore.mustache
index 7c280441649..8092a49d515 100644
--- a/modules/openapi-generator/src/main/resources/dart-dio/gitignore.mustache
+++ b/modules/openapi-generator/src/main/resources/dart-dio/gitignore.mustache
@@ -1,6 +1,7 @@
-# See https://www.dartlang.org/tools/private-files.html
+# See https://dart.dev/guides/libraries/private-files
 
 # Files and directories created by pub
+.dart_tool/
 .buildlog
 .packages
 .project
@@ -25,3 +26,12 @@ doc/api/
 # Don't commit pubspec lock file 
 # (Library packages only! Remove pattern if developing an application package)
 pubspec.lock
+
+# Don’t commit files and directories created by other development environments.
+# For example, if your development environment creates any of the following files,
+# consider putting them in a global ignore file:
+*.iml         // IntelliJ
+*.ipr         // IntelliJ
+*.iws         // IntelliJ
+.idea/        // IntelliJ
+.DS_Store     // Mac
diff --git a/samples/client/petstore/dart-dio/.gitignore b/samples/client/petstore/dart-dio/.gitignore
index 7c280441649..8092a49d515 100644
--- a/samples/client/petstore/dart-dio/.gitignore
+++ b/samples/client/petstore/dart-dio/.gitignore
@@ -1,6 +1,7 @@
-# See https://www.dartlang.org/tools/private-files.html
+# See https://dart.dev/guides/libraries/private-files
 
 # Files and directories created by pub
+.dart_tool/
 .buildlog
 .packages
 .project
@@ -25,3 +26,12 @@ doc/api/
 # Don't commit pubspec lock file 
 # (Library packages only! Remove pattern if developing an application package)
 pubspec.lock
+
+# Don’t commit files and directories created by other development environments.
+# For example, if your development environment creates any of the following files,
+# consider putting them in a global ignore file:
+*.iml         // IntelliJ
+*.ipr         // IntelliJ
+*.iws         // IntelliJ
+.idea/        // IntelliJ
+.DS_Store     // Mac