diff --git a/CHANGELOG.md b/CHANGELOG.md
index fb4093a..166fceb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Holiday definitions
 
+## 5.7.3
+
+* Fix stupid naming problem in Greece yaml file
+
 ## 5.7.2
 
 * Fix `gr` in index countries
diff --git a/gr.yml b/gr.yaml
similarity index 100%
rename from gr.yml
rename to gr.yaml