diff --git a/api/graphql/schema/root.graphql b/api/graphql/schema/root.graphql
index 94a0b5309af76c11f5b41031c033bd7d65ffa0d9..884fd98db4170774eec7b06bf760e2bf7e91c78e 100644
--- a/api/graphql/schema/root.graphql
+++ b/api/graphql/schema/root.graphql
@@ -8,6 +8,8 @@ type Mutation {
     newBug(input: NewBugInput!): NewBugPayload!
     """Add a new comment to a bug"""
     addComment(input: AddCommentInput!): AddCommentPayload!
+    """Change a comment of a bug"""
+    editComment(input: EditCommentInput!): EditCommentPayload!
     """Add or remove a set of label on a bug"""
     changeLabels(input: ChangeLabelInput): ChangeLabelPayload!
     """Change a bug's status to open"""