diff --git a/modules/openapi-generator/src/main/resources/crystal/gitignore.mustache b/modules/openapi-generator/src/main/resources/crystal/gitignore.mustache
index 05a17cb8f0a..1a7e69fd1cd 100644
--- a/modules/openapi-generator/src/main/resources/crystal/gitignore.mustache
+++ b/modules/openapi-generator/src/main/resources/crystal/gitignore.mustache
@@ -1,39 +1,14 @@
 # Generated by: https://openapi-generator.tech
 #
 
-*.gem
-*.rbc
-/.config
-/coverage/
-/InstalledFiles
-/pkg/
-/spec/reports/
-/spec/examples.txt
-/test/tmp/
-/test/version_tmp/
+/docs/
+/lib/
+/bin/
+/.shards/
+*.dwarf
+
+# Libraries don't need dependency lock
+# Dependencies will be locked in applications that use them
+/shard.lock
+
 /tmp/
-
-## Specific to RubyMotion:
-.dat*
-.repl_history
-build/
-
-## Documentation cache and generated files:
-/.yardoc/
-/_yardoc/
-/doc/
-/rdoc/
-
-## Environment normalization:
-/.bundle/
-/vendor/bundle
-/lib/bundler/man/
-
-# for a library or gem, you might want to ignore these files since the code is
-# intended to run in multiple environments; otherwise, check them in:
-# Gemfile.lock
-# .ruby-version
-# .ruby-gemset
-
-# unless supporting rvm < 1.11.0 or doing something fancy, ignore this:
-.rvmrc
diff --git a/samples/client/petstore/crystal/.gitignore b/samples/client/petstore/crystal/.gitignore
index 05a17cb8f0a..1a7e69fd1cd 100644
--- a/samples/client/petstore/crystal/.gitignore
+++ b/samples/client/petstore/crystal/.gitignore
@@ -1,39 +1,14 @@
 # Generated by: https://openapi-generator.tech
 #
 
-*.gem
-*.rbc
-/.config
-/coverage/
-/InstalledFiles
-/pkg/
-/spec/reports/
-/spec/examples.txt
-/test/tmp/
-/test/version_tmp/
+/docs/
+/lib/
+/bin/
+/.shards/
+*.dwarf
+
+# Libraries don't need dependency lock
+# Dependencies will be locked in applications that use them
+/shard.lock
+
 /tmp/
-
-## Specific to RubyMotion:
-.dat*
-.repl_history
-build/
-
-## Documentation cache and generated files:
-/.yardoc/
-/_yardoc/
-/doc/
-/rdoc/
-
-## Environment normalization:
-/.bundle/
-/vendor/bundle
-/lib/bundler/man/
-
-# for a library or gem, you might want to ignore these files since the code is
-# intended to run in multiple environments; otherwise, check them in:
-# Gemfile.lock
-# .ruby-version
-# .ruby-gemset
-
-# unless supporting rvm < 1.11.0 or doing something fancy, ignore this:
-.rvmrc