diff --git a/5.1/alpine3.20/Dockerfile b/5.1/alpine3.22/Dockerfile
similarity index 99%
rename from 5.1/alpine3.20/Dockerfile
rename to 5.1/alpine3.22/Dockerfile
index 592efd2..984ac95 100644
--- a/5.1/alpine3.20/Dockerfile
+++ b/5.1/alpine3.22/Dockerfile
@@ -4,7 +4,7 @@
 # PLEASE DO NOT EDIT IT DIRECTLY.
 #
 
-FROM ruby:3.2-alpine3.20
+FROM ruby:3.2-alpine3.22
 
 # explicitly set uid/gid to guarantee that it won't change in the future
 # the values 999:999 are identical to the current user/group id assigned
diff --git a/5.1/alpine3.20/docker-entrypoint.sh b/5.1/alpine3.22/docker-entrypoint.sh
similarity index 100%
rename from 5.1/alpine3.20/docker-entrypoint.sh
rename to 5.1/alpine3.22/docker-entrypoint.sh
diff --git a/6.0/alpine3.20/Dockerfile b/6.0/alpine3.22/Dockerfile
similarity index 99%
rename from 6.0/alpine3.20/Dockerfile
rename to 6.0/alpine3.22/Dockerfile
index a7f7dfc..3bb7ee9 100644
--- a/6.0/alpine3.20/Dockerfile
+++ b/6.0/alpine3.22/Dockerfile
@@ -4,7 +4,7 @@
 # PLEASE DO NOT EDIT IT DIRECTLY.
 #
 
-FROM ruby:3.3-alpine3.20
+FROM ruby:3.3-alpine3.22
 
 # explicitly set uid/gid to guarantee that it won't change in the future
 # the values 999:999 are identical to the current user/group id assigned
diff --git a/6.0/alpine3.20/docker-entrypoint.sh b/6.0/alpine3.22/docker-entrypoint.sh
similarity index 100%
rename from 6.0/alpine3.20/docker-entrypoint.sh
rename to 6.0/alpine3.22/docker-entrypoint.sh
diff --git a/versions.json b/versions.json
index fb65154..114f9d0 100644
--- a/versions.json
+++ b/versions.json
@@ -1,6 +1,6 @@
 {
   "5.1": {
-    "alpine": "3.21",
+    "alpine": "3.22",
     "debian": "bookworm",
     "downloadUrl": "https://www.redmine.org/releases/redmine-5.1.8.tar.gz",
     "ruby": {
@@ -9,13 +9,13 @@
     "sha256": "50a30cd16c43d0ae64f256866c8cef4b0e9dd818d6feef489fa24507fbde3a7b",
     "variants": [
       "bookworm",
-      "alpine3.21",
-      "alpine3.20"
+      "alpine3.22",
+      "alpine3.21"
     ],
     "version": "5.1.8"
   },
   "6.0": {
-    "alpine": "3.21",
+    "alpine": "3.22",
     "debian": "bookworm",
     "downloadUrl": "https://www.redmine.org/releases/redmine-6.0.5.tar.gz",
     "ruby": {
@@ -24,8 +24,8 @@
     "sha256": "94dcc53115e0581ac46e60c3ed9318f1926ce464babbb385e5236217d1e6a64e",
     "variants": [
       "bookworm",
-      "alpine3.21",
-      "alpine3.20"
+      "alpine3.22",
+      "alpine3.21"
     ],
     "version": "6.0.5"
   }
diff --git a/versions.sh b/versions.sh
index e2d67c1..f49a446 100755
--- a/versions.sh
+++ b/versions.sh
@@ -5,8 +5,8 @@ supportedDebianSuites=(
 	bookworm
 )
 supportedAlpineVersions=(
+	3.22
 	3.21
-	3.20
 )
 
 defaultDebianSuite="${supportedDebianSuites[0]}"