diff --git a/1.11/alpine3.19/Dockerfile b/1.11/alpine3.21/Dockerfile
similarity index 98%
rename from 1.11/alpine3.19/Dockerfile
rename to 1.11/alpine3.21/Dockerfile
index 97458b84..f92a52eb 100644
--- a/1.11/alpine3.19/Dockerfile
+++ b/1.11/alpine3.21/Dockerfile
@@ -4,7 +4,7 @@
 # PLEASE DO NOT EDIT IT DIRECTLY.
 #
 
-FROM alpine:3.19
+FROM alpine:3.21
 
 ENV JULIA_PATH /usr/local/julia
 ENV PATH $JULIA_PATH/bin:$PATH
diff --git a/1.11/alpine3.19/docker-entrypoint.sh b/1.11/alpine3.21/docker-entrypoint.sh
similarity index 100%
rename from 1.11/alpine3.19/docker-entrypoint.sh
rename to 1.11/alpine3.21/docker-entrypoint.sh
diff --git a/versions.json b/versions.json
index 22494599..54ee966c 100644
--- a/versions.json
+++ b/versions.json
@@ -92,8 +92,8 @@
     "variants": [
       "bookworm",
       "bullseye",
+      "alpine3.21",
       "alpine3.20",
-      "alpine3.19",
       "windows/windowsservercore-ltsc2022",
       "windows/windowsservercore-1809"
     ],
diff --git a/versions.sh b/versions.sh
index b61aee95..bf762d8c 100755
--- a/versions.sh
+++ b/versions.sh
@@ -104,8 +104,8 @@ for version in "${versions[@]}"; do
 			"bookworm",
 			"bullseye",
 			if .arches | keys | any(startswith("alpine-")) then
+				"3.21",
 				"3.20",
-				"3.19",
 				empty
 				| "alpine" + .
 			else empty end,