diff --git a/.github/workflows/i386.yml b/.github/workflows/i386.yml
index a7c71a590cb8..78dc92bffff6 100644
--- a/.github/workflows/i386.yml
+++ b/.github/workflows/i386.yml
@@ -23,7 +23,7 @@ jobs:
       with:
         submodules: 'true'
     - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v3
+      uses: docker/setup-buildx-action@v3.4.0
       with:
         driver-opts: network=host
     - name: Build and push container
diff --git a/tests/ci_build/Dockerfile.i386 b/tests/ci_build/Dockerfile.i386
index d7c133e2aee4..a582a54020bb 100644
--- a/tests/ci_build/Dockerfile.i386
+++ b/tests/ci_build/Dockerfile.i386
@@ -1,7 +1,7 @@
 FROM i386/debian:sid
 
 ENV DEBIAN_FRONTEND noninteractive
-SHELL ["/bin/bash", "-c"]   # Use Bash as shell
+SHELL ["/bin/bash", "-c"]
 
 RUN \
     apt-get update && \
diff --git a/tests/ci_build/conda_env/macos_cpu_test.yml b/tests/ci_build/conda_env/macos_cpu_test.yml
index ce9ca4b1ba7c..e2e377e2145d 100644
--- a/tests/ci_build/conda_env/macos_cpu_test.yml
+++ b/tests/ci_build/conda_env/macos_cpu_test.yml
@@ -38,4 +38,3 @@ dependencies:
 - cloudpickle
 - pip:
   - sphinx_rtd_theme
-  - py-ubjson