diff --git a/tools/check-release.py b/tools/check-release.py
old mode 100644
new mode 100755
index 0882c987..e2ef27f7
--- a/tools/check-release.py
+++ b/tools/check-release.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python3
+#
 # Check if a sha in a dependency is included in a release.
 # Releases are inferred from tags in the main repo and dependecies
 # are read from the Cargo.lock file.