diff --git a/.editorconfig b/.editorconfig
old mode 100755
new mode 100644
diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
old mode 100755
new mode 100644
diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml
old mode 100755
new mode 100644
diff --git a/.github/ISSUE_TEMPLATE/config.yml b/.github/ISSUE_TEMPLATE/config.yml
old mode 100755
new mode 100644
diff --git a/.github/ISSUE_TEMPLATE/issue.bug.yml b/.github/ISSUE_TEMPLATE/issue.bug.yml
old mode 100755
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diff --git a/.github/ISSUE_TEMPLATE/issue.feature.yml b/.github/ISSUE_TEMPLATE/issue.feature.yml
old mode 100755
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diff --git a/.github/workflows/call_issue_pr_tracker.yml b/.github/workflows/call_issue_pr_tracker.yml
old mode 100755
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diff --git a/.github/workflows/call_issues_cron.yml b/.github/workflows/call_issues_cron.yml
old mode 100755
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diff --git a/.github/workflows/external_trigger.yml b/.github/workflows/external_trigger.yml
old mode 100755
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diff --git a/.github/workflows/external_trigger_scheduler.yml b/.github/workflows/external_trigger_scheduler.yml
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diff --git a/.github/workflows/greetings.yml b/.github/workflows/greetings.yml
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diff --git a/.github/workflows/package_trigger_scheduler.yml b/.github/workflows/package_trigger_scheduler.yml
old mode 100755
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diff --git a/Dockerfile b/Dockerfile
index d60b137..3ffef29 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-FROM ghcr.io/linuxserver/baseimage-alpine:3.20 as buildstage
+FROM ghcr.io/linuxserver/baseimage-alpine:3.21 AS buildstage
 
 # build variables
 ARG SYNCTHING_RELEASE
@@ -34,7 +34,7 @@ RUN \
     build syncthing
 
 ############## runtime stage ##############
-FROM ghcr.io/linuxserver/baseimage-alpine:3.20
+FROM ghcr.io/linuxserver/baseimage-alpine:3.21
 
 # set version label
 ARG BUILD_DATE
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index 98985e2..450137c 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-FROM ghcr.io/linuxserver/baseimage-alpine:arm64v8-3.20 as buildstage
+FROM ghcr.io/linuxserver/baseimage-alpine:arm64v8-3.21 AS buildstage
 
 # build variables
 ARG SYNCTHING_RELEASE
@@ -34,7 +34,7 @@ RUN \
     build syncthing
 
 ############## runtime stage ##############
-FROM ghcr.io/linuxserver/baseimage-alpine:arm64v8-3.20
+FROM ghcr.io/linuxserver/baseimage-alpine:arm64v8-3.21
 
 # set version label
 ARG BUILD_DATE
diff --git a/LICENSE b/LICENSE
old mode 100755
new mode 100644
diff --git a/README.md b/README.md
index f96b7a7..8cb8df7 100644
--- a/README.md
+++ b/README.md
@@ -293,6 +293,7 @@ Once registered you can define the dockerfile to use with `-f Dockerfile.aarch64
 
 ## Versions
 
+* **12.03.24:** - Rebase to Alpine 3.21.
 * **06.06.24:** - Rebase to Alpine 3.20.
 * **05.03.24:** - Rebase to Alpine 3.19.
 * **05.09.23:** - Rebase to Alpine 3.18.
diff --git a/readme-vars.yml b/readme-vars.yml
index fd77824..b1c2f99 100755
--- a/readme-vars.yml
+++ b/readme-vars.yml
@@ -74,6 +74,7 @@ init_diagram: |
   "syncthing:latest" <- Base Images
 # changelog
 changelogs:
+  - {date: "12.03.24:", desc: "Rebase to Alpine 3.21."}
   - {date: "06.06.24:", desc: "Rebase to Alpine 3.20."}
   - {date: "05.03.24:", desc: "Rebase to Alpine 3.19."}
   - {date: "05.09.23:", desc: "Rebase to Alpine 3.18."}