diff --git a/.changeset/weak-carrots-grin.md b/.changeset/weak-carrots-grin.md
new file mode 100644
index 00000000000..78240e6cbda
--- /dev/null
+++ b/.changeset/weak-carrots-grin.md
@@ -0,0 +1,5 @@
+---
+'@graphql-codegen/cli': patch
+---
+
+Treat windows and unix line ending the same when using --check flag
diff --git a/packages/graphql-codegen-cli/src/generate-and-save.ts b/packages/graphql-codegen-cli/src/generate-and-save.ts
index b95511219b7..9ddc20ebf66 100644
--- a/packages/graphql-codegen-cli/src/generate-and-save.ts
+++ b/packages/graphql-codegen-cli/src/generate-and-save.ts
@@ -167,7 +167,9 @@ function isConfiguredOutput(output: any): output is Types.ConfiguredOutput {
 
 async function hashFile(filePath: string): Promise<string | null> {
   try {
-    return hash(await readFile(filePath));
+    const fileContent = await readFile(filePath);
+    fileContent.replace(/\r\n/g, '\n');
+    return hash(fileContent);
   } catch (err) {
     if (err && err.code === 'ENOENT') {
       // return null if file does not exist