diff --git a/Dockerfile b/Dockerfile
index d5f6e51..9991bd2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,4 @@
 FROM python:3.12.4-alpine3.20@sha256:a982997504b8ec596f553d78f4de4b961bbdf5254e0177f6e99bb34f4ef16f95
-COPY --from=koalaman/shellcheck:v0.10.0@sha256:2097951f02e735b613f4a34de20c40f937a6c8f18ecb170612c88c34517221fb /bin/shellcheck /usr/bin/
-COPY --from=ghcr.io/gitleaks/gitleaks:v8.18.4@sha256:f44e526acc67786b7476db413edb993ce2d152660d32fb3eb48d9bca06fa83f8 /usr/bin/gitleaks /usr/bin/
 
 # renovate: datasource=repology depName=alpine_3_20/build-base versioning=loose
 ENV BUILD_BASE_VERSION="0.5-r3"
@@ -14,8 +12,6 @@ ENV GIT_VERSION="2.45.2-r0"
 ENV OPENSSH_KEYGEN_VERSION="9.7_p1-r3"
 # renovate: datasource=pypi depName=pre-commit versioning=pep440
 ENV PRE_COMMIT_VERSION="3.7.1"
-# renovate: datasource=rubygems depName=mdl versioning=ruby
-ENV MDL_VERSION="0.13.0"
 
 RUN mkdir /data /tmp/pre-commit
 COPY .pre-commit-config.yaml /tmp/pre-commit
@@ -23,13 +19,11 @@ COPY .pre-commit-config.yaml /tmp/pre-commit
 RUN apk add --update --no-cache \
       build-base="${BUILD_BASE_VERSION}" \
       gcc="${GCC_VERSION}" \
-      ruby="${RUBY_VERSION}" \
       ruby-dev="${RUBY_VERSION}" \
       git="${GIT_VERSION}" \
       openssh-keygen="${OPENSSH_KEYGEN_VERSION}" \
     && \
     pip install --no-cache-dir pre-commit=="${PRE_COMMIT_VERSION}" && \
-    gem install --no-document mdl -v "${MDL_VERSION}" && \
     git config --global --add safe.directory /data && \
     cd /tmp/pre-commit && \
     git init --initial-branch main && \