diff --git a/.github/workflows/make-tests.yml b/.github/workflows/make-tests.yml
index 7392253ae..bc0511f64 100644
--- a/.github/workflows/make-tests.yml
+++ b/.github/workflows/make-tests.yml
@@ -1,10 +1,10 @@
 name: Regression tests
 
 on:
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
+#   push:
+#     branches: [ master ]
+#   pull_request:
+#     branches: [ master ]
 
 jobs:
 
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 587553389..f72cb2733 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -1,6 +1,12 @@
 name: Build/publish release binaries (Linux, Mac)
 
+# Also build/publish a prism-X.Y-src.tar.gz
+
 on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
 #   push:
 #     # Trigger on version tags: v4.10 etc.
 #     tags:
@@ -20,14 +26,37 @@ on:
 
 jobs:
 
+  build_src:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        # Use the tag from manual input, otherwise fall back to the git ref
+        ref: ${{ github.event.inputs.tag_name || github.ref }}
+        fetch-depth: 0 # Fetches all tags and history
+    - name: Build source
+      shell: bash
+      working-directory: ./prism
+      run: |
+        make release_source BRANCH=HEAD
+    - name: Upload artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: prism-src
+        path: prism/release/*.tar.gz
+
   build:
     strategy:
       matrix:
         include:
           - os: ubuntu-latest
-            artifact_name: prism-linux64
+            artifact_name: prism-linux64-x86
+          - os: ubuntu-22.04-arm
+            artifact_name: prism-linux64-arm
           - os: macos-latest
-            artifact_name: prism-macos64
+            artifact_name: prism-mac64-arm
+          - os: macos-15-intel
+            artifact_name: prism-mac64-x86
     runs-on: ${{ matrix.os }}
 
     steps:
@@ -58,16 +87,20 @@ jobs:
       matrix:
         include:
           - os: ubuntu-latest
-            artifact: prism-linux64
+            artifact_name: prism-linux64-x86
+          - os: ubuntu-22.04-arm
+            artifact_name: prism-linux64-arm
           - os: macos-latest
-            artifact: prism-macos64
+            artifact_name: prism-mac64-arm
+          - os: macos-15-intel
+            artifact_name: prism-mac64-x86
     runs-on: ${{ matrix.os }}
     
     steps:
     - name: Download Artifact
       uses: actions/download-artifact@v4
       with:
-        name: ${{ matrix.artifact }}
+        name: ${{ matrix.artifact_name }}
         path: test-dir
     - name: Verify download
       run: ls -R test-dir/
@@ -82,7 +115,7 @@ jobs:
         etc/tests/run.sh
 
   publish:
-      needs: [build, test_release]
+      needs: [build_src, build, test_release]
       runs-on: ubuntu-latest
       permissions:
         # Crucial for creating releases
diff --git a/prism/Makefile b/prism/Makefile
index 780549e54..1be0caa6b 100644
--- a/prism/Makefile
+++ b/prism/Makefile
@@ -625,11 +625,12 @@ build_release:
 release_source: release_check_version build_release_source
 
 build_release_source:
-	@echo Creating source distribution from branch "$(BRANCH)" in "release/$(SRC_DIST_FILE)"... && \
+	echo Creating source distribution from branch "$(BRANCH)" in "release/$(SRC_DIST_FILE)"... && \
 	mkdir -p release && \
 	rm -rf "release/$(SRC_DIST_DIR)" && \
 	rm -f "release/$(SRC_DIST_FILE)" && \
 	mkdir -p "release/$(SRC_DIST_DIR)" && \
+	git branch --v && \
 	(cd .. && git archive $(BRANCH) --format=tar) | tar xf - -C "release/$(SRC_DIST_DIR)" && \
 	(cd release && tar cfz "$(SRC_DIST_FILE)" "$(SRC_DIST_DIR)") && rm -rf "release/$(SRC_DIST_DIR)"