diff --git a/.github/workflows/container-release.yml b/.github/workflows/container-release.yml
index e44ac2004..795995e92 100644
--- a/.github/workflows/container-release.yml
+++ b/.github/workflows/container-release.yml
@@ -26,7 +26,7 @@ jobs:
       - name: Install Crystal
         uses: crystal-lang/install-crystal@v1.8.0
         with:
-          crystal: 1.9.2
+          crystal: 1.12.1
 
       - name: Run lint
         run: |
diff --git a/docker/Dockerfile b/docker/Dockerfile
index ace096bfe..3d9323fdd 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM crystallang/crystal:1.8.2-alpine AS builder
+FROM crystallang/crystal:1.12.1-alpine AS builder
 
 RUN apk add --no-cache sqlite-static yaml-static
 
diff --git a/docker/Dockerfile.arm64 b/docker/Dockerfile.arm64
index 602f3ab2b..f054b326f 100644
--- a/docker/Dockerfile.arm64
+++ b/docker/Dockerfile.arm64
@@ -1,5 +1,5 @@
-FROM alpine:3.18 AS builder
-RUN apk add --no-cache 'crystal=1.8.2-r0' shards sqlite-static yaml-static yaml-dev libxml2-static zlib-static openssl-libs-static openssl-dev musl-dev xz-static
+FROM alpine:3.19 AS builder
+RUN apk add --no-cache 'crystal=1.10.1-r0' shards sqlite-static yaml-static yaml-dev libxml2-static zlib-static openssl-libs-static openssl-dev musl-dev xz-static
 
 ARG release