diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 53c9da9248..add392d5eb 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -13,18 +13,8 @@ jobs:
         uses: actions/setup-python@v4
         with:
           python-version: 3.8
-      - name: Install dmgbuild
-        run: pip3 install dmgbuild
-      - name: Install pytest
-        run: pip install pytest pytest-xdist
-      - name: Install biplist
-        run: pip install biplist
-      - name: Set up Ruby 2.6
-        uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: '2.6'
       - name: Install deps
-        run: ./tools/macos-setup-brew.sh --install-optional --install-doc-deps
+        run: ./tools/macos-setup-brew.sh --install-optional --install-doc-deps --install-dmg-deps --install-test-deps
         env:
           HOMEBREW_NO_AUTO_UPDATE: 1
       - name: Mkdir
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 95588e5d6c..6148ff0fc3 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -208,7 +208,7 @@ variables:
     # Make sure /usr/local/bin is first in order to work around asdf.
     - export PATH=/usr/local/bin:$PATH
     - printf "\e[0Ksection_start:%s:brew_section[collapsed=true]\r\e[0KInstalling prerequisites" "$( date +%s)"
-    - ./tools/macos-setup-brew.sh --install-optional
+    - ./tools/macos-setup-brew.sh --install-optional --install-test-deps
     - printf "\e[0Ksection_end:%s:brew_section\r\e[0K" "$( date +%s)"
     - export PYTEST_ADDOPTS=--skip-missing-programs=dumpcap,rawshark
     - mkdir -p ccache
diff --git a/tools/macos-setup-brew.sh b/tools/macos-setup-brew.sh
index 5fb26f3e20..fc388de3eb 100755
--- a/tools/macos-setup-brew.sh
+++ b/tools/macos-setup-brew.sh
@@ -45,6 +45,7 @@ INSTALL_OPTIONAL=0
 INSTALL_DOC_DEPS=0
 INSTALL_DMG_DEPS=0
 INSTALL_SPARKLE_DEPS=0
+INSTALL_TEST_DEPS=0
 OPTIONS=()
 for arg; do
     case $arg in
@@ -64,11 +65,15 @@ for arg; do
         --install-sparkle-deps)
             INSTALL_SPARKLE_DEPS=1
             ;;
+        --install-test-deps)
+            INSTALL_TEST_DEPS=1
+            ;;
         --install-all)
             INSTALL_OPTIONAL=1
             INSTALL_DOC_DEPS=1
             INSTALL_DMG_DEPS=1
             INSTALL_SPARKLE_DEPS=1
+            INSTALL_TEST_DEPS=1
             ;;
         *)
             OPTIONS+=("$arg")
@@ -134,9 +139,6 @@ fi
 
 install_formulae "${ACTUAL_LIST[@]}"
 
-# Install python modules
-pip3 install pytest pytest-xdist
-
 if [ $INSTALL_DMG_DEPS -ne 0 ] ; then
     pip3 install dmgbuild
 fi
@@ -145,6 +147,10 @@ if [ $INSTALL_SPARKLE_DEPS -ne 0 ] ; then
     brew cask install sparkle
 fi
 
+if [ $INSTALL_TEST_DEPS -ne 0 ] ; then
+    pip3 install pytest pytest-xdist
+fi
+
 # Uncomment to add PNG compression utilities used by compress-pngs:
 # brew install advancecomp optipng oxipng pngcrush