diff --git a/.gitea/workflows/release.yml b/.gitea/workflows/release.yml
index 2e69cd5..dd09f2b 100644
--- a/.gitea/workflows/release.yml
+++ b/.gitea/workflows/release.yml
@@ -97,11 +97,24 @@ jobs:
             cmake --install "build-$name" --prefix "dist/$pkg"
           done
 
-      - name: Cortex-M compile matrix
+      - name: Cortex-M build & package
         run: |
-          cmake -S . -B build-cortex-m -DDR_COMPILE_CHECK=ON
-          cmake --build build-cortex-m --parallel $(nproc)
-          echo "--- Cortex-M build matrix: all variants passed ---"
+          for name in cm3 cm4-soft cm4-hard cm7-soft cm7-hard; do
+            case $name in
+              cm3)      flags="-mcpu=cortex-m3     -mthumb -mfloat-abi=soft" ;;
+              cm4-soft) flags="-mcpu=cortex-m4     -mthumb -mfloat-abi=soft" ;;
+              cm4-hard) flags="-mcpu=cortex-m4     -mthumb -mfpu=fpv4-sp-d16  -mfloat-abi=hard" ;;
+              cm7-soft) flags="-mcpu=cortex-m7     -mthumb -mfloat-abi=soft" ;;
+              cm7-hard) flags="-mcpu=cortex-m7     -mthumb -mfpu=fpv5-d16     -mfloat-abi=hard" ;;
+            esac
+            echo ">>> Building $name"
+            cmake -S . -B "build-$name" \
+              -DBUILD_TESTING=OFF -DBUILD_EXAMPLES=OFF \
+              -DCMAKE_C_FLAGS="$flags"
+            cmake --build "build-$name"
+            cmake --install "build-$name" --prefix "dist/datarouter-$name"
+          done
+          echo "--- Cortex-M package build: all variants passed ---"
 
       - name: Create release & upload assets
         run: |