diff --git a/add-version.sh b/add-version.sh
index f00ccb3..ad7e679 100755
--- a/add-version.sh
+++ b/add-version.sh
@@ -110,6 +110,8 @@ elif [ "$flink_version" = "1.20.2" ]; then
     gpg_key="CC33238850B5A92624ED7F6216AE0DDBBB2F380B"
 elif [ "$flink_version" = "1.20.3" ]; then
     gpg_key="5EE2CDBE52BDDB9CCB1C63B6E6BAF9CFABD4ED71"
+elif [ "$flink_version" = "1.20.4" ]; then
+    gpg_key="F7529FAE24811A5C0DF3CA741596BBF0726835D8"
 else
     error "Missing GPG key ID for this release"
 fi