diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8535021f72..7a43638e79 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,7 +7,7 @@ First version
 
 # API
 ## 3
-application/x-www-form-urlencoded is now deperecated
+application/x-www-form-urlencoded is now deprecated
 
 ## 2
 * パラメータ: _userkey --> i