diff --git a/.github/config.yml b/.github/config.yml
index 9089030b859..84d29368e6b 100644
--- a/.github/config.yml
+++ b/.github/config.yml
@@ -12,4 +12,4 @@ GHC_FOR_VALIDATE: '["9.10.1", "9.8.2", "9.6.6", "9.4.8", "9.2.8", "9.0.2", "8.10
 GHC_FOR_VALIDATE_OLD: '["8.4.4", "8.2.2", "8.0.2"]'
 #
 COMMON_FLAGS: -j 2 -v
-LTS_BRANCH: '3.12'
+LTS_RELEASE: '3.12'
diff --git a/.github/workflows/check-sdist.yml b/.github/workflows/check-sdist.yml
index 70d76cdfe77..f9349238310 100644
--- a/.github/workflows/check-sdist.yml
+++ b/.github/workflows/check-sdist.yml
@@ -47,7 +47,7 @@ jobs:
         # release of a corresponding Cabal and friends. it can also be short since it's
         # highly unlikely that we are releasing really old branches.
         ghc:
-          ["9.10.1", "9.8.1", "9.6.1"]
+          ["9.12.1", "9.10.1", "9.8.1", "9.6.1"]
 
     steps:
 
diff --git a/.github/workflows/prerelease-lts.yml b/.github/workflows/prerelease-lts.yml
index 63d4a6bad58..131d8857c4d 100644
--- a/.github/workflows/prerelease-lts.yml
+++ b/.github/workflows/prerelease-lts.yml
@@ -77,7 +77,7 @@ jobs:
 
       - uses: actions/checkout@v4
         with:
-          ref: ${{ needs.config.outputs.LTS_BRANCH }}
+          ref: ${{ needs.config.outputs.LTS_RELEASE }}
 
       # We were making prereleases with validate builds, so I will continue to do so
       - uses: ./.github/actions/validate-build
@@ -116,7 +116,7 @@ jobs:
     permissions:
       contents: write
 
-    needs: [prerelease-build-most, prerelease-build-alpine]
+    needs: [config, prerelease-build-most, prerelease-build-alpine]
 
     steps:
       - uses: liudonghua123/delete-release-action@v1
@@ -134,6 +134,6 @@ jobs:
         uses: softprops/action-gh-release@v2
         with:
           tag_name: cabal-lts-head
-          target_committish: ${{ needs.config.outputs.LTS_BRANCH }}
+          target_commitish: ${{ needs.config.outputs.LTS_RELEASE }}
           prerelease: true
           files: binaries/cabal-*
diff --git a/.github/workflows/tier-2.yml b/.github/workflows/tier-2.yml
index bd0ecd3ad4e..a8b62f8219e 100644
--- a/.github/workflows/tier-2.yml
+++ b/.github/workflows/tier-2.yml
@@ -105,7 +105,7 @@ jobs:
     steps:
       - run: ${{ needs.config.outputs.env }}
 
-      - run: ${{ matrix.os.prerequisites }}
+      - run: ${{ matrix.sys.prerequisites }}
 
       - uses: actions/checkout@v4
 
@@ -175,7 +175,7 @@ jobs:
     steps:
       - run: ${{ needs.config.outputs.env }}
 
-      - run: ${{ matrix.os.prerequisites }}
+      - run: ${{ matrix.sys.prerequisites }}
 
       - uses: ./.github/actions/cabal-setup
         with:
@@ -239,7 +239,7 @@ jobs:
     steps:
       - run: ${{ needs.config.outputs.env }}
 
-      - run: ${{ matrix.os.prerequisites }}
+      - run: ${{ matrix.sys.prerequisites }}
 
       - uses: ./.github/actions/cabal-setup
         with:
@@ -300,7 +300,7 @@ jobs:
     steps:
       - run: ${{ needs.config.outputs.env }}
 
-      - run: ${{ matrix.os.prerequisites }}
+      - run: ${{ matrix.sys.prerequisites }}
 
       - uses: ./.github/actions/cabal-setup
         with:
diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index 15ddbcaaca7..ef64c9de28e 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -149,7 +149,7 @@ jobs:
         with:
           shell: ${{ matrix.sys.shell }}
           ghc: ${{ matrix.ghc }}
-          allow-newer: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.allow_newer || '' }}
+          allow-newer: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.allow-newer || '' }}
           constraints: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.constraints || '' }}
 
   # We never validate this. We would probably have caught https://gitlab.haskell.org/ghc/ghc/-/issues/25087
@@ -179,7 +179,7 @@ jobs:
         with:
           ghc: ${{ env.GHC_FOR_RELEASE }}
           static: 'true'
-          allow-newer: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.allow_newer || '' }}
+          allow-newer: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.allow-newer || '' }}
           constraints: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.constraints || '' }}
 
   # Thanks yet again to YAML-as-code, I need three of these now. This is abysmally stupid.
@@ -231,7 +231,7 @@ jobs:
         with:
           shell: ${{ matrix.sys.shell }}
           ghc: ${{ matrix.ghc }}
-          allow-newer: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.allow_newer || '' }}
+          allow-newer: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.allow-newer || '' }}
           constraints: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.constraints || '' }}
 
       # Note: we rely on cabal and the test suites being already cached here. If they aren't, this
@@ -289,7 +289,7 @@ jobs:
         with:
           shell: ${{ matrix.sys.shell }}
           ghc: ${{ matrix.ghc }}
-          allow-newer: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.allow_newer || '' }}
+          allow-newer: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.allow-newer || '' }}
           constraints: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.constraints || '' }}
 
       - run: |
@@ -319,7 +319,7 @@ jobs:
         with:
           shell: ${{ matrix.sys.shell }}
           ghc: ${{ needs.config.outputs.GHC_FOR_SOLVER_BENCHMARKS }}
-          allow-newer: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.allow_newer || '' }}
+          allow-newer: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.allow-newer || '' }}
           constraints: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.constraints || '' }}
 
       - run: |
@@ -385,7 +385,7 @@ jobs:
         with:
           ghc: ${{ needs.config.outputs.GHC_FOR_RELEASE }}
           shell: ${{ matrix.sys.shell }}
-          allow-newer: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.allow_newer || '' }}
+          allow-newer: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.allow-newer || '' }}
           constraints: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.constraints || '' }}
 
   # We use this job as a summary of the workflow