diff --git a/.github/workflows/build_test.yml b/.github/workflows/build_test.yml
index ae44d338..bd5ecb70 100644
--- a/.github/workflows/build_test.yml
+++ b/.github/workflows/build_test.yml
@@ -80,7 +80,7 @@ jobs:
         with:
           path: ros_ws/src
       - name: Build and Test ROS 1
-        uses: ros-tooling/action-ros-ci@master
+        uses: ros-tooling/action-ros-ci@0.3.6
         if: ${{ contains('["melodic", "noetic"]', matrix.ros_distro) }}
         continue-on-error: true
         with:
@@ -89,7 +89,7 @@ jobs:
           vcs-repo-file-url: ""
       - name: Build and Test ROS 2
         id: build_and_test_step
-        uses: ros-tooling/action-ros-ci@master
+        uses: ros-tooling/action-ros-ci@0.3.6
         if: ${{ contains('["melodic", "noetic"]', matrix.ros_distro) == false }}
         with:
           package-name: usb_cam
diff --git a/include/usb_cam/formats/mjpeg.hpp b/include/usb_cam/formats/mjpeg.hpp
index 2faff235..2b40bb2b 100644
--- a/include/usb_cam/formats/mjpeg.hpp
+++ b/include/usb_cam/formats/mjpeg.hpp
@@ -233,7 +233,7 @@ class MJPEG2RGB : public pixel_format_base
     std::cerr << m_averror_str << std::endl;
   }
 
-  AVCodec * m_avcodec;
+  const AVCodec * m_avcodec;
   AVCodecContext * m_avcodec_context;
   AVCodecParserContext * m_avparser;
   AVFrame * m_avframe_device;