diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index de732f2..f4a9bc6 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -67,14 +67,10 @@ jobs:
       - name: 🙏 build
         run: dotnet build -m:1 -bl:build.binlog
 
-      - name: ⚙ GNU grep
-        if: matrix.os == 'macOS-latest'
-        run: |
-          brew install grep
-          echo 'export PATH="/usr/local/opt/grep/libexec/gnubin:$PATH"' >> .bash_profile
-
       - name: 🧪 test
-        uses: ./.github/workflows/test
+        run: |
+          dotnet tool update -g dotnet-retest
+          dotnet retest -- --no-build
 
       - name: 🐛 logs
         uses: actions/upload-artifact@v3
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 82ef81b..a4be3ad 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -30,7 +30,9 @@ jobs:
         run: dotnet build -m:1 -bl:build.binlog
 
       - name: 🧪 test
-        uses: ./.github/workflows/test
+        run: |
+          dotnet tool update -g dotnet-retest
+          dotnet retest -- --no-build
 
       - name: 🐛 logs
         uses: actions/upload-artifact@v3
diff --git a/.github/workflows/test/action.yml b/.github/workflows/test/action.yml
deleted file mode 100644
index 4a7dbae..0000000
--- a/.github/workflows/test/action.yml
+++ /dev/null
@@ -1,36 +0,0 @@
-name: test
-description: runs dotnet tests with retry
-runs:
-  using: "composite"
-  steps:
-    - name: 🧪 test
-      shell: bash --noprofile --norc {0}
-      env:
-        LC_ALL: en_US.utf8
-      run: |
-        [ -f .bash_profile ] && source .bash_profile
-        counter=0
-        exitcode=0
-        reset="\e[0m"
-        warn="\e[0;33m"
-        while [ $counter -lt 6 ]
-        do
-            # run test and forward output also to a file in addition to stdout (tee command)
-            if [ $filter ]
-            then
-                echo -e "${warn}Retry $counter for $filter ${reset}"
-                dotnet test --no-build -m:1 --blame-hang --blame-hang-timeout 5m --filter=$filter | tee ./output.log
-            else
-                dotnet test --no-build -m:1 --blame-hang --blame-hang-timeout 5m | tee ./output.log
-            fi
-            # capture dotnet test exit status, different from tee
-            exitcode=${PIPESTATUS[0]}
-            if [ $exitcode == 0 ]
-            then
-                exit 0
-            fi
-            # cat output, get failed test names, remove trailing whitespace, sort+dedupe, join as FQN~TEST with |, remove trailing |.
-            filter=$(cat ./output.log | grep -o -P '(?<=\sFailed\s)[\w\._]*' | sed 's/ *$//g' | sort -u | awk 'BEGIN { ORS="|" } { print("FullyQualifiedName~" $0) }' | grep -o -P '.*(?=\|$)')
-            ((counter++))
-        done
-        exit $exitcode