diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8daa9f434..2cb39a5c9 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,6 +1,7 @@
 image: git.pleroma.social:5050/pleroma/pleroma/ci-base
 
 variables: &global_variables
+  ELIXIR_VER: 1.12.3
   POSTGRES_DB: pleroma_test
   POSTGRES_USER: postgres
   POSTGRES_PASSWORD: postgres
@@ -276,7 +277,7 @@ stop_review_app:
 
 amd64:
   stage: release
-  image: elixir:1.11.4
+  image: elixir:$ELIXIR_VER
   only: &release-only
   - stable@pleroma/pleroma
   - develop@pleroma/pleroma
@@ -316,7 +317,7 @@ amd64-musl:
   stage: release
   artifacts: *release-artifacts
   only: *release-only
-  image: elixir:1.11.4-alpine
+  image: elixir:$ELIXIR_VER-alpine
   tags:
     - amd64
   cache: *release-cache
@@ -334,7 +335,7 @@ arm:
   only: *release-only
   tags:
     - arm32-specified
-  image: arm32v7/elixir:1.11.4
+  image: arm32v7/elixir:$ELIXIR_VER
   cache: *release-cache
   variables: *release-variables
   before_script: *before-release
@@ -346,7 +347,7 @@ arm-musl:
   only: *release-only
   tags:
     - arm32-specified
-  image: arm32v7/elixir:1.11.4-alpine
+  image: arm32v7/elixir:$ELIXIR_VER-alpine
   cache: *release-cache
   variables: *release-variables
   before_script: *before-release-musl
@@ -358,7 +359,7 @@ arm64:
   only: *release-only
   tags:
     - arm
-  image: arm64v8/elixir:1.11.4
+  image: arm64v8/elixir:$ELIXIR_VER
   cache: *release-cache
   variables: *release-variables
   before_script: *before-release
@@ -370,7 +371,7 @@ arm64-musl:
   only: *release-only
   tags:
     - arm
-  image: arm64v8/elixir:1.11.4-alpine
+  image: arm64v8/elixir:$ELIXIR_VER-alpine
   cache: *release-cache
   variables: *release-variables
   before_script: *before-release-musl
diff --git a/Dockerfile b/Dockerfile
index 310d18104..56c99da72 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 ARG ELIXIR_IMG=hexpm/elixir
-ARG ELIXIR_VER=1.11.4
+ARG ELIXIR_VER=1.12.3
 ARG ERLANG_VER=24.2.1
 ARG ALPINE_VER=3.17.0
 
diff --git a/ci/Dockerfile b/ci/Dockerfile
index ca28b7029..a2b566873 100644
--- a/ci/Dockerfile
+++ b/ci/Dockerfile
@@ -1,4 +1,4 @@
-FROM elixir:1.11.4
+FROM elixir:1.12.3
 
 # Single RUN statement, otherwise intermediate images are created
 # https://docs.docker.com/develop/develop-images/dockerfile_best-practices/#run
diff --git a/mix.exs b/mix.exs
index e346834e5..6e3d69379 100644
--- a/mix.exs
+++ b/mix.exs
@@ -5,7 +5,7 @@ defmodule Pleroma.Mixfile do
     [
       app: :pleroma,
       version: version("2.5.52"),
-      elixir: "~> 1.11",
+      elixir: "~> 1.12",
       elixirc_paths: elixirc_paths(Mix.env()),
       compilers: Mix.compilers(),
       elixirc_options: [warnings_as_errors: warnings_as_errors()],