diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f881a14..3da8008 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,7 +7,7 @@ on:
   workflow_dispatch:
     inputs:
       branch:
-        default: stable
+        default: '"stable"'
 
 concurrency: # Cancel stale PR builds (but not push builds)
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
@@ -18,23 +18,9 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        target:
-          - os: linux
-            cpu: amd64
-            TEST_LANG: c
-          - os: linux
-            cpu: amd64
-            TEST_LANG: cpp
-        branch: ${{ fromJSON(format('[{0}]', inputs.branch || '"1.2.x","1.4.x","1.6.x","2.0.x", "devel"')) }}
-        include:
-          - target:
-              os: linux
-            shell: bash
-    defaults:
-      run:
-        shell: ${{ matrix.shell }}
+        branch: ${{ fromJSON(format('[{0}]', inputs.branch || '"1.2.0","1.2.x","1.4.2","1.4.x","1.6.0","1.6.x","2.0.0","2.0.x","stable","devel"')) }}
 
-    name: 'nim-${{matrix.branch}}-${{ matrix.target.TEST_LANG }}'
+    name: 'nim-${{matrix.branch}}'
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -48,5 +34,6 @@ jobs:
       - name: Run tests
         run: |
           nim --version
-          env TEST_LANG="${{ matrix.target.TEST_LANG }}" nimble test
+          env TEST_LANG="c" nimble test
+          env TEST_LANG="cpp" nimble test
 
diff --git a/tests/test_results.nim b/tests/test_results.nim
index 9637cea..9f6f90f 100644
--- a/tests/test_results.nim
+++ b/tests/test_results.nim
@@ -125,7 +125,7 @@ block:
       doAssert d.isErr
 
   # De-reference
-  when (NimMajor, NimMinor) >= (1, 6):
+  when (NimMajor, NimMinor, NimPatch) >= (1, 6, 12):
     {.warning[BareExcept]: off.}
 
   try:
@@ -134,7 +134,7 @@ block:
   except:
     discard
 
-  when (NimMajor, NimMinor) >= (1, 6):
+  when (NimMajor, NimMinor, NimPatch) >= (1, 6, 12):
     {.warning[BareExcept]: on.}
 
   # Comparisons