diff --git a/dist/ruff-action/index.js b/dist/ruff-action/index.js
index 3b7a747..caf4fec 100644
Binary files a/dist/ruff-action/index.js and b/dist/ruff-action/index.js differ
diff --git a/src/ruff-action.ts b/src/ruff-action.ts
index d6b2031..ae28828 100644
--- a/src/ruff-action.ts
+++ b/src/ruff-action.ts
@@ -35,6 +35,7 @@ async function run(): Promise<void> {
     );
 
     addRuffToPath(setupResult.ruffDir);
+    setOutputFormat();
     core.setOutput("ruff-version", setupResult.version);
     core.info(`Successfully installed ruff version ${setupResult.version}`);
 
@@ -86,6 +87,11 @@ function addRuffToPath(cachedPath: string): void {
   core.info(`Added ${cachedPath} to the path`);
 }
 
+function setOutputFormat() {
+  core.exportVariable("RUFF_OUTPUT_FORMAT", "github");
+  core.info("Set RUFF_OUTPUT_FORMAT to github");
+}
+
 async function runRuff(
   ruffExecutablePath: string,
   args: string[],