diff --git a/src/setup-python.ts b/src/setup-python.ts
index 69ea9d368..81266c984 100644
--- a/src/setup-python.ts
+++ b/src/setup-python.ts
@@ -52,7 +52,7 @@ function resolveVersionInput() {
   );
   versionFile = '.python-version';
   if (fs.existsSync(versionFile)) {
-    const version = fs.readFileSync(versionFile, 'utf8');
+    const version = fs.readFileSync(versionFile, 'utf8').trim();
     core.info(`Resolved ${versionFile} as ${version}`);
     return [version];
   }