Fixed a bug with call_filter not working properly
diff --git a/CHANGES b/CHANGES
index 3dd6894..839abe7 100644
--- a/CHANGES
+++ b/CHANGES
@@ -5,6 +5,8 @@
 -------------
 (bugfix release)
 
+- Fixed a bug with ``call_filter`` not working properly on environment
+  and context filters.
 
 Version 2.7
 -----------