diff --git a/Dockerfile-bundle-base b/Dockerfile-bundle-base
index a3c43ba..0ff518f 100644
--- a/Dockerfile-bundle-base
+++ b/Dockerfile-bundle-base
@@ -1,4 +1,4 @@
-FROM alpine:3.20
+FROM alpine:3.21.0
 
 ENV NOKOGIRI_USE_SYSTEM_LIBRARIES=1
 ENV BUNDLE_SILENCE_ROOT_WARNING=1