diff --git a/Dockerfile b/Dockerfile
index 2b2627f..225d791 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ghcr.io/linuxserver/baseimage-alpine:3.13
+FROM ghcr.io/linuxserver/baseimage-alpine:3.15
 
 # set version label
 ARG BUILD_DATE
@@ -39,8 +39,8 @@ RUN \
     /app/apprise-api/ --strip-components=1 && \
   echo "**** install pip packages ****" && \
   cd /app/apprise-api && \
-  pip3 install -U --no-cache-dir pip && \
-  pip install -U --no-cache-dir --find-links https://wheel-index.linuxserver.io/alpine/ -r requirements.txt && \
+  pip3 install -U --no-cache-dir pip wheel && \
+  pip install -U --no-cache-dir --find-links https://wheel-index.linuxserver.io/alpine-3.15/ -r requirements.txt && \
   echo "**** cleanup ****" && \
   apk del --purge \
     build-dependencies && \
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index 2b5137f..5c37fcd 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -1,4 +1,4 @@
-FROM ghcr.io/linuxserver/baseimage-alpine:arm64v8-3.12
+FROM ghcr.io/linuxserver/baseimage-alpine:arm64v8-3.15
 
 # set version label
 ARG BUILD_DATE
@@ -39,8 +39,8 @@ RUN \
     /app/apprise-api/ --strip-components=1 && \
   echo "**** install pip packages ****" && \
   cd /app/apprise-api && \
-  pip3 install -U --no-cache-dir pip && \
-  pip install -U --no-cache-dir --find-links https://wheel-index.linuxserver.io/alpine/ -r requirements.txt && \
+  pip3 install -U --no-cache-dir pip wheel && \
+  pip install -U --no-cache-dir --find-links https://wheel-index.linuxserver.io/alpine-3.15/ -r requirements.txt && \
   echo "**** cleanup ****" && \
   apk del --purge \
     build-dependencies && \
diff --git a/Dockerfile.armhf b/Dockerfile.armhf
index 830294a..c98ebb7 100644
--- a/Dockerfile.armhf
+++ b/Dockerfile.armhf
@@ -1,4 +1,4 @@
-FROM ghcr.io/linuxserver/baseimage-alpine:arm32v7-3.12
+FROM ghcr.io/linuxserver/baseimage-alpine:arm32v7-3.15
 
 # set version label
 ARG BUILD_DATE
@@ -39,8 +39,8 @@ RUN \
     /app/apprise-api/ --strip-components=1 && \
   echo "**** install pip packages ****" && \
   cd /app/apprise-api && \
-  pip3 install -U --no-cache-dir pip && \
-  pip install -U --no-cache-dir --find-links https://wheel-index.linuxserver.io/alpine/ -r requirements.txt && \
+  pip3 install -U --no-cache-dir pip wheel && \
+  pip install -U --no-cache-dir --find-links https://wheel-index.linuxserver.io/alpine-3.15/ -r requirements.txt && \
   echo "**** cleanup ****" && \
   apk del --purge \
     build-dependencies && \
diff --git a/README.md b/README.md
index 2d9076d..dc12eed 100644
--- a/README.md
+++ b/README.md
@@ -223,6 +223,7 @@ Once registered you can define the dockerfile to use with `-f Dockerfile.aarch64
 
 ## Versions
 
+* **28.02.21:** - Rebase to alpine 3.15.
 * **03.11.21:** - Increase uWSGI buffer size to 32kb.
 * **16.05.21:** - Add linuxserver wheel index.
 * **26.02.21:** - Initial Release.
diff --git a/readme-vars.yml b/readme-vars.yml
index 6399550..3baf8ed 100644
--- a/readme-vars.yml
+++ b/readme-vars.yml
@@ -79,6 +79,7 @@ app_setup_block: []
 
 # changelog
 changelogs:
+  - { date: "28.02.21:", desc: "Rebase to alpine 3.15." }
   - { date: "03.11.21:", desc: "Increase uWSGI buffer size to 32kb." }
   - { date: "16.05.21:", desc: "Add linuxserver wheel index." }
   - { date: "26.02.21:", desc: "Initial Release." }