diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 45cae4b..2839417 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -102,8 +102,18 @@ jobs:
           if-no-files-found: error
 
   compile-plugins:
-    name: compile-plugins
+    name: compile-plugins-sm${{ matrix.sm.label }}
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        sm:
+          - label: "1.12"
+            branch: "1.12-dev"
+            image_tag: "1.12-dev"
+          - label: "1.13"
+            branch: "master"
+            image_tag: "master"
 
     steps:
       - name: Checkout
@@ -111,10 +121,7 @@ jobs:
 
       - name: Clone SourceMod includes
         run: |
-          # The spcomp container only ever bundles one compiler build (tracking
-          # sourcepawn's master), so compile against SourceMod's master includes
-          # to match it — older branches' includes assume their own era's compiler.
-          git clone --depth 1 https://github.com/alliedmodders/sourcemod.git sourcemod
+          git clone --depth 1 -b ${{ matrix.sm.branch }} https://github.com/alliedmodders/sourcemod.git sourcemod
 
       - name: Compile Pawn plugins
         run: |
@@ -122,12 +129,8 @@ jobs:
           status=0
           for f in Pawn/*.sp; do
             echo "::group::${f}"
-            # The published image's declared entrypoint (/usr/local/bin/spcomp) doesn't
-            # match where the binary actually lives, so locate it ourselves.
             docker run --rm -v "${{ github.workspace }}:/work" -w /work \
-              --entrypoint /bin/sh \
-              ghcr.io/alliedmodders/sourcemod-spcomp:master \
-              -c 'spcomp=$(find /usr/local/bin -maxdepth 2 -name spcomp -type f | head -n1); exec "$spcomp" "$@"' sh \
+              ghcr.io/alliedmodders/sourcemod-spcomp:${{ matrix.sm.image_tag }} \
               -i Pawn/includes -i sourcemod/plugins/include \
               "${f}" -o "compiled/$(basename "${f%.sp}.smx")" \
               || status=1