diff --git a/appveyor.yml b/appveyor.yml
index 2ce48fb..1f7b072 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,5 +1,5 @@
 # version format
-version: 0.2.4-%APPVEYOR_REPO_COMMIT%
+version: 0.2.4-{APPVEYOR_REPO_COMMIT}
 
 # pull request template
 pull_requests: