diff --git a/.swiftformatignore b/.swiftformatignore
new file mode 100644
index 00000000..4539aa72
--- /dev/null
+++ b/.swiftformatignore
@@ -0,0 +1,3 @@
+Tests/OpenAPIGeneratorReferenceTests/Resources
+Sources/swift-openapi-generator/Documentation.docc
+Generated
\ No newline at end of file