diff --git a/.github/actions/build_linux/Dockerfile b/.github/actions/build_linux/Dockerfile
index 229d369..ed022d9 100644
--- a/.github/actions/build_linux/Dockerfile
+++ b/.github/actions/build_linux/Dockerfile
@@ -10,7 +10,7 @@ LABEL "homepage"="TBD"
 LABEL "maintainer"="dewb"
 
 RUN apt-get update
-RUN apt-get install -y build-essential cmake curl gcc g++ git make tar unzip zip libgl1-mesa-dev libglu1-mesa-dev jq
+RUN apt-get install -y build-essential cmake curl gcc g++ git make tar unzip zip libgl1-mesa-dev libglu1-mesa-dev jq zstd
 
 ADD entrypoint.sh /entrypoint.sh
 RUN chmod a+x /entrypoint.sh
diff --git a/.github/actions/build_win/Dockerfile b/.github/actions/build_win/Dockerfile
index cbd0572..94946e2 100644
--- a/.github/actions/build_win/Dockerfile
+++ b/.github/actions/build_win/Dockerfile
@@ -10,7 +10,7 @@ LABEL "homepage"="TBD"
 LABEL "maintainer"="dewb"
 
 RUN apt-get update
-RUN apt-get install -y build-essential cmake curl gcc g++ git make tar unzip zip libgl1-mesa-dev libglu1-mesa-dev jq g++-mingw-w64-x86-64
+RUN apt-get install -y build-essential cmake curl gcc g++ git make tar unzip zip libgl1-mesa-dev libglu1-mesa-dev jq zstd g++-mingw-w64-x86-64
 
 ADD entrypoint.sh /entrypoint.sh
 RUN chmod a+x /entrypoint.sh
diff --git a/.github/actions/update_asset/entrypoint.sh b/.github/actions/update_asset/entrypoint.sh
index 7e73bfd..ae7f00e 100755
--- a/.github/actions/update_asset/entrypoint.sh
+++ b/.github/actions/update_asset/entrypoint.sh
@@ -9,11 +9,6 @@ GITHUB_UPLOAD_URL=https://uploads.github.com
 
 REPO=${GITHUB_REPOSITORY#"https://github.com/"} # work around url parsing bug in act for local testing
 
-# If the action was triggered on a branch other than master, terminate with neutral status
-if [ ${GITHUB_REF} != "refs/heads/master" ] ; then
-    exit 78
-fi
-
 FILENAME=$(basename ${ASSET_PATH})
 
 # Get information about the release
diff --git a/.github/actions/update_tag/entrypoint.sh b/.github/actions/update_tag/entrypoint.sh
index 08292ec..a27a4bf 100755
--- a/.github/actions/update_tag/entrypoint.sh
+++ b/.github/actions/update_tag/entrypoint.sh
@@ -2,16 +2,11 @@
 
 # expects TAG and REF environment variables set in workflow
 
-set -eu
+set -eux
 
 GITHUB_API_URL=https://api.github.com
 REPO=${GITHUB_REPOSITORY#"https://github.com/"} # work around url parsing bug in act for local testing
 
-# If the action was triggered on a different ref than specified, terminate with neutral status
-if [ ${GITHUB_REF} != ${REF} ] ; then
-    exit 78
-fi
-
 # Update the tag to point to the ref
 curl -i \
     --header "Authorization: token ${GITHUB_TOKEN}" \
diff --git a/.github/workflows/push.yml b/.github/workflows/push.yml
index 56c508c..1eda587 100644
--- a/.github/workflows/push.yml
+++ b/.github/workflows/push.yml
@@ -5,18 +5,20 @@ jobs:
     name: Build Linux
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@master
+    - uses: actions/checkout@main
     - name: Build Linux
       uses: ./.github/actions/build_linux
       env:
         RACK_SDK_VERSION: 2.0.3
     - name: Tag Head as Latest
+      if: ${{ github.ref == 'refs/heads/main' }}
       uses: ./.github/actions/update_tag
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        REF: refs/heads/master
+        REF: refs/heads/main
         TAG: latest
     - name: Upload Linux Release
+      if: ${{ github.ref == 'refs/heads/main' }}
       uses: ./.github/actions/update_asset
       env:
         ASSET_PATH: dist/vitamin-2.0.1-lin.zip
@@ -26,18 +28,20 @@ jobs:
     name: Build Windows
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@master
+    - uses: actions/checkout@main
     - name: Build Windows
       uses: ./.github/actions/build_win
       env:
         RACK_SDK_VERSION: 2.0.3
     - name: Tag Head as Latest
+      if: ${{ github.ref == 'refs/heads/main' }}
       uses: ./.github/actions/update_tag
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        REF: refs/heads/master
+        REF: refs/heads/main
         TAG: latest
     - name: Upload Windows Release
+      if: ${{ github.ref == 'refs/heads/main' }}
       uses: ./.github/actions/update_asset
       env:
         ASSET_PATH: dist/vitamin-2.0.1-win.zip
@@ -48,7 +52,7 @@ jobs:
 #    name: Build OSX
 #    runs-on: ubuntu-latest
 #    steps:
-#    - uses: actions/checkout@master
+#    - uses: actions/checkout@main
 #    - name: Build OSX
 #      uses: ./.github/actions/build_osx
 #      env:
@@ -57,7 +61,7 @@ jobs:
 #      uses: ./.github/actions/update_tag
 #      env:
 #        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-#        REF: refs/heads/master
+#        REF: refs/heads/main
 #        TAG: latest
 #    - name: Upload OSX Release
 #      uses: ./.github/actions/update_asset
diff --git a/README.md b/README.md
index 9b7efeb..ed719a3 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ Features two mono lines, two stereo lines, and a single mono-to-stereo line.
 The mono-to-stereo line performs a constant power center pan to the outputs
 when bypassing, to maintain constant apparent volume.
 
-![Vitamin B Screenshot](https://raw.githubusercontent.com/xaviershay/vcv-modules/master/images/vitamin-b.png)
+![Vitamin B Screenshot](https://raw.githubusercontent.com/xaviershay/vcv-modules/main/images/vitamin-b.png)
 
 ## Vitamin P (Pan)
 
@@ -25,7 +25,7 @@ full range of control either:
 * set the knob to left position with a unipolar input 0V to 10V.
 * set the knob to middle position with a bipolar input -5V to 5V.
 
-![Vitamin P Screenshot](https://raw.githubusercontent.com/xaviershay/vcv-modules/master/images/vitamin-p.png)
+![Vitamin P Screenshot](https://raw.githubusercontent.com/xaviershay/vcv-modules/main/images/vitamin-p.png)
 
 # Development