diff --git a/clone/cmd/ctclone/Dockerfile b/clone/cmd/ctclone/Dockerfile
index aa0496800..3c9fc63c6 100644
--- a/clone/cmd/ctclone/Dockerfile
+++ b/clone/cmd/ctclone/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.19-alpine3.17@sha256:504f0b9b177aef633965cb55d00f37e062e9374914b4047f2e0cd260d2752791 AS builder
+FROM golang:1.21-alpine3.17@sha256:6467daf26aec6b82c750be4ca9b6aaf3a6a07ed22e1d4ff72dbdda9a93bb39bf AS builder
 
 ARG GOFLAGS=""
 ENV GOFLAGS=$GOFLAGS