diff --git a/CHANGELOG.md b/CHANGELOG.md
index 445ceb9..cae8d94 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,8 @@ The **patch** part changes is incremented if multiple releases happen the same m
 
 ### Fixed
 
+* letsencrypt: Add required check when retrieving certificate. (Avoid TypeError.)
+
 ### Removed
 
 ### Security