diff --git a/CHANGELOG.md b/CHANGELOG.md
index b835569..fd2c079 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 ## [Unreleased]
 
+## 1.0.1-wp
+### Fixed
+* fix fatal error when the env var `CI_COMMIT_PULL_REQUEST` is empty (#2)
+
 ## 1.0.0-wp
 ### Added
 * add environment variables of woodpecker