diff --git a/Dockerfile b/Dockerfile
index 96539e4..a10bb0d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.20
+FROM alpine:3.21
 
 ARG RUBYGEM_R10K=5.0.0
 ARG RUBYGEM_PUPPET=8.10.0