diff --git a/.tool-versions b/.tool-versions
index 48a3c9a6d..01339e781 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,4 +1,4 @@
 elixir 1.13.4-otp-24
-erlang 24.0.3
+erlang 24.3.3
 nodejs 16.3.0
 python 3.9.12
diff --git a/Dockerfile b/Dockerfile
index 7f4199e24..d64f8d503 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@
 # platform specific, it makes sense to build it in the docker
 
 #### Builder
-FROM hexpm/elixir:1.13.4-erlang-24.0-alpine-3.13.3 as buildcontainer
+FROM hexpm/elixir:1.13.4-erlang-24.3.3-alpine-3.15.3 as buildcontainer
 
 # preparation
 ARG APP_VER=0.0.1
@@ -52,7 +52,7 @@ COPY rel rel
 RUN mix release plausible
 
 # Main Docker Image
-FROM alpine:3.13.3
+FROM alpine:3.15.3
 LABEL maintainer="tckb <tckb@tgrthi.me>"
 ENV LANG=C.UTF-8