diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 2fa68825..d3466b80 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -123,38 +123,41 @@ jobs:
         with:
           activate-environment: adcc-dev
           environment-file: conda/environment_dev_linux.yml
+          miniforge-variant: Mambaforge
+          use-mamba: true
+          miniforge-version: latest
           python-version: ${{ matrix.version }}
           auto-activate-base: false
-      - name: Dump siteconfig with coverage flags for C++
-        run: |
-          mkdir $HOME/.adcc/
-          echo 'coverage = True' > $HOME/.adcc/siteconfig.py
+      # - name: Dump siteconfig with coverage flags for C++
+      #   run: |
+      #     mkdir $HOME/.adcc/
+      #     echo 'coverage = True' > $HOME/.adcc/siteconfig.py
       - name: Build and test adcc
         run: |
           conda info
           conda list
           # python -c "import psi4"
-          python setup.py test -a '--cov=adcc'
+          python setup.py test
           python setup.py cpptest -v
       #
-      - name: Upload coverage to codecov
-        run: |
-          pip install codecov
-          codecov -X gcov
-          lcov --directory . --capture --output-file coverage.info
-          lcov --remove coverage.info '/opt/*' '/Applications/*' '/Library/*' '/usr/*' "${HOME}"'/.cache/*' "${HOME}"'/.local/*' "${PWD}"'/build/*' "${PWD}"'/libadcc/tests/*' --output-file coverage.info
-          lcov --list coverage.info
-          codecov -X gcov -f coverage.info
+      # - name: Upload coverage to codecov
+      #   run: |
+      #     pip install codecov
+      #     codecov -X gcov
+      #     lcov --directory . --capture --output-file coverage.info
+      #     lcov --remove coverage.info '/opt/*' '/Applications/*' '/Library/*' '/usr/*' "${HOME}"'/.cache/*' "${HOME}"'/.local/*' "${PWD}"'/build/*' "${PWD}"'/libadcc/tests/*' --output-file coverage.info
+      #     lcov --list coverage.info
+      #     codecov -X gcov -f coverage.info
       #
-      - name: Upload coverage to coveralls
-        # Note: Needs to be after the above step, because it parses the coverage.info
-        run: |
-          pip install coveralls
-          sudo gem install coveralls-lcov
-          coveralls-lcov -v -n coverage.info > coverage.json
-          coveralls --service=github --merge=coverage.json
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      # - name: Upload coverage to coveralls
+      #   # Note: Needs to be after the above step, because it parses the coverage.info
+      #   run: |
+      #     pip install coveralls
+      #     sudo gem install coveralls-lcov
+      #     coveralls-lcov -v -n coverage.info > coverage.json
+      #     coveralls --service=github --merge=coverage.json
+      #   env:
+      #     GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
   #
   # Test source code formatting
diff --git a/conda/environment_dev_linux.yml b/conda/environment_dev_linux.yml
index 952db690..c1f401bd 100644
--- a/conda/environment_dev_linux.yml
+++ b/conda/environment_dev_linux.yml
@@ -4,10 +4,11 @@ channels:
 dependencies:
   # Build
   - python
-  - gcc_linux-64 =9.4
-  - gxx_linux-64 =9.4
-  - libtensorlight =3.0.1=hc894906_1
+  - gcc_linux-64 >=12
+  - gxx_linux-64 >=12
+  - libtensorlight =3.0.1=h3cb4726_2
   - pybind11 >=2.6
+  - pip
   # Run
   - numpy >=1.14
   - scipy >=1.2
diff --git a/setup.py b/setup.py
index 456c5c19..4a1ad254 100755
--- a/setup.py
+++ b/setup.py
@@ -359,6 +359,9 @@ def libadcc_extension():
         flags["extra_compile_args"] += ["-Wno-unused-command-line-argument",
                                         "-Wno-undefined-var-template",
                                         "-Wno-bitwise-instead-of-logical"]
+    if sys.platform.startswith("linux"):
+        # otherwise fails with -O3 on gcc>=12
+        flags["extra_compile_args"] += ["-Wno-array-bounds"]
 
     platform_autoinstall = (
         sys.platform.startswith("linux") or sys.platform.startswith("darwin")