diff --git a/.github/workflows/OscarTests.yml b/.github/workflows/OscarTests.yml
deleted file mode 100644
index d913339..0000000
--- a/.github/workflows/OscarTests.yml
+++ /dev/null
@@ -1,106 +0,0 @@
-name: Run tests with Oscar master
-
-on:
-  push:
-    branches:
-      - master
-  pull_request:
-  workflow_dispatch:
-
-# needed to allow julia-actions/cache to delete old caches that it has created
-permissions:
-  actions: write
-  contents: read
-
-concurrency:
-  # group by workflow and ref; the last slightly strange component ensures that for pull
-  # requests, we limit to 1 concurrent job, but for the master branch we don't
-  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.ref != 'refs/heads/master' || github.run_number }}
-  # Cancel intermediate builds, but only if it is a pull request build.
-  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
-
-jobs:
-  oscartest:
-    runs-on: ${{ matrix.os }}
-    timeout-minutes: 30
-    continue-on-error: ${{ matrix.julia-version == 'nightly' }}
-    strategy:
-      fail-fast: false
-      matrix:
-        julia-version:
-          - '1.8'
-          - '1.10'
-          - '1.11'
-          - '1.12-nightly'
-          - 'nightly'
-        julia-arch:
-          - x64
-        os:
-          - ubuntu-latest
-        # include:
-          # Add a few macOS jobs (not too many, the number we can run in parallel is limited)
-          # - julia-version: '1.8'
-          #   julia-arch: x64
-          #   os: macOS-latest
-          # - julia-version: 'nightly'
-          #   julia-arch: x64
-          #   os: macOS-latest
-
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          # For Codecov, we must also fetch the parent of the HEAD commit to
-          # be able to properly deal with PRs / merges
-          fetch-depth: 2
-
-      - name: "Set up Julia"
-        uses: julia-actions/setup-julia@v2
-        with:
-          version: ${{ matrix.julia-version }}
-          arch: ${{ matrix.julia-arch }}
-
-      - name: Restore cache
-        uses: julia-actions/cache@v2
-        with:
-          cache-name: julia-cache;workflow=${{ github.workflow }};julia=${{ matrix.julia-version }};arch=${{ runner.arch }}
-          include-matrix: false
-
-      - name: "Remove Oscar.jl compat"
-        shell: julia --color=yes {0}
-        run: |
-          using TOML
-          project = TOML.parsefile("Project.toml")
-          project["compat"]["Oscar"] = "1"
-          open("Project.toml", "w") do io
-              TOML.print(io, project)
-          end
-
-      - name: "Dev Oscar.jl master"
-        shell: julia --project=. --color=yes {0}
-        run: |
-          using Pkg
-          Pkg.add(url="https://github.com/oscar-system/Oscar.jl", rev="master")
-        env:
-          JULIA_PKG_PRECOMPILE_AUTO: no
-
-      - name: "Build package"
-        uses: julia-actions/julia-buildpkg@latest
-
-      # - name: "limit OpenMP threads"
-      #   if: runner.os == 'macOS'
-      #   # restrict number of openMP threads on macOS due to oversubscription
-      #   run: echo "OMP_NUM_THREADS=1" >> $GITHUB_ENV
-
-      - name: "Run tests"
-        uses: julia-actions/julia-runtest@latest
-        with:
-          depwarn: 'error'
-
-      - name: "Process code coverage"
-        uses: julia-actions/julia-processcoverage@v1
-
-      - name: "Upload coverage data to Codecov"
-        continue-on-error: true
-        uses: codecov/codecov-action@v5
-        with:
-          token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.github/workflows/Tests.yml b/.github/workflows/Tests.yml
index c69393b..0b0037e 100644
--- a/.github/workflows/Tests.yml
+++ b/.github/workflows/Tests.yml
@@ -4,6 +4,7 @@ on:
   push:
     branches:
       - master
+    tags: '*'
   pull_request:
   workflow_dispatch:
 
@@ -33,18 +34,11 @@ jobs:
           - '1.11'
           - '1.12-nightly'
           - 'nightly'
-        julia-arch:
-          - x64
+        oscar-version:
+          - 'stable'
+          - 'devel'
         os:
           - ubuntu-latest
-        # include:
-          # Add a few macOS jobs (not too many, the number we can run in parallel is limited)
-          # - julia-version: '1.8'
-          #   julia-arch: x64
-          #   os: macOS-latest
-          # - julia-version: 'nightly'
-          #   julia-arch: x64
-          #   os: macOS-latest
 
     steps:
       - uses: actions/checkout@v4
@@ -53,28 +47,34 @@ jobs:
           # be able to properly deal with PRs / merges
           fetch-depth: 2
 
-      - name: "Set up Julia"
-        uses: julia-actions/setup-julia@v2
+      - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.julia-version }}
-          arch: ${{ matrix.julia-arch }}
 
-      - name: Restore cache
-        uses: julia-actions/cache@v2
-        with:
-          cache-name: julia-cache;workflow=${{ github.workflow }};julia=${{ matrix.julia-version }};arch=${{ runner.arch }}
-          include-matrix: false
+      - uses: julia-actions/cache@v2
+
+      - name: "Remove Oscar.jl compat"
+        if: ${{ matrix.oscar-version == 'devel' }}
+        shell: julia --color=yes {0}
+        run: |
+          using TOML
+          project = TOML.parsefile("Project.toml")
+          project["compat"]["Oscar"] = "1"
+          open("Project.toml", "w") do io
+              TOML.print(io, project)
+          end
 
-      - name: "Build package"
-        uses: julia-actions/julia-buildpkg@latest
+      - name: "Install OSCAR dev version"
+        if: ${{ matrix.oscar-version == 'devel' }}
+        shell: julia --project=. --color=yes {0}
+        run: |
+          using Pkg
+          Pkg.develop("Oscar")
+          Pkg.pin("Oscar")
 
-      # - name: "limit OpenMP threads"
-      #   if: runner.os == 'macOS'
-      #   # restrict number of openMP threads on macOS due to oversubscription
-      #   run: echo "OMP_NUM_THREADS=1" >> $GITHUB_ENV
+      - uses: julia-actions/julia-buildpkg@v1
 
-      - name: "Run tests"
-        uses: julia-actions/julia-runtest@latest
+      - uses: julia-actions/julia-runtest@v1
         with:
           depwarn: 'error'