diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index a6fcadf18..8497d4f60 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -22,7 +22,7 @@ name: nightly
 
 on:
   schedule:
-    - cron: "0 * * * *"
+    - cron: "0 4 * * *"
 
 jobs:
   license:
diff --git a/.github/workflows/test_matrix.json b/.github/workflows/test_matrix.json
index 6f1875723..a4a19eb07 100644
--- a/.github/workflows/test_matrix.json
+++ b/.github/workflows/test_matrix.json
@@ -237,5 +237,137 @@
       "schedule",
       "workflow_dispatch"
     ]
+  },
+  {
+    "name": "MacOS 11 / Python 3.8 / Dask",
+    "os": "macos-latest",
+    "python-version": "3.8",
+    "backend": "dask",
+    "experimental": false,
+    "trigger": [
+      "schedule",
+      "workflow_dispatch"
+    ]
+  },
+  {
+    "name": "MacOS 11 / Python 3.8 / Local",
+    "os": "macos-latest",
+    "python-version": "3.8",
+    "backend": "local",
+    "experimental": false,
+    "trigger": [
+      "schedule",
+      "workflow_dispatch"
+    ]
+  },
+  {
+    "name": "MacOS 11 / Python 3.9 / Dask",
+    "os": "macos-latest",
+    "python-version": "3.9",
+    "backend": "dask",
+    "experimental": false,
+    "trigger": [
+      "schedule",
+      "workflow_dispatch"
+    ]
+  },
+  {
+    "name": "MacOS 11 / Python 3.9 / Local",
+    "os": "macos-latest",
+    "python-version": "3.9",
+    "backend": "local",
+    "experimental": false,
+    "trigger": [
+      "schedule",
+      "workflow_dispatch"
+    ]
+  },
+  {
+    "name": "MacOS 11 / Python 3.10 / Dask",
+    "os": "macos-latest",
+    "python-version": "3.10",
+    "backend": "dask",
+    "experimental": false,
+    "trigger": [
+      "schedule",
+      "workflow_dispatch"
+    ]
+  },
+  {
+    "name": "MacOS 11 / Python 3.10 / Local",
+    "os": "macos-latest",
+    "python-version": "3.10",
+    "backend": "local",
+    "experimental": false,
+    "trigger": [
+      "schedule",
+      "workflow_dispatch"
+    ]
+  },
+  {
+    "name": "MacOS 12 / Python 3.8 / Dask",
+    "os": "macos-12",
+    "python-version": "3.8",
+    "backend": "dask",
+    "experimental": false,
+    "trigger": [
+      "schedule",
+      "workflow_dispatch"
+    ]
+  },
+  {
+    "name": "MacOS 12 / Python 3.8 / Local",
+    "os": "macos-12",
+    "python-version": "3.8",
+    "backend": "local",
+    "experimental": false,
+    "trigger": [
+      "schedule",
+      "workflow_dispatch"
+    ]
+  },
+  {
+    "name": "MacOS 12 / Python 3.9 / Dask",
+    "os": "macos-12",
+    "python-version": "3.9",
+    "backend": "dask",
+    "experimental": false,
+    "trigger": [
+      "schedule",
+      "workflow_dispatch"
+    ]
+  },
+  {
+    "name": "MacOS 12 / Python 3.9 / Local",
+    "os": "macos-12",
+    "python-version": "3.9",
+    "backend": "local",
+    "experimental": false,
+    "trigger": [
+      "schedule",
+      "workflow_dispatch"
+    ]
+  },
+  {
+    "name": "MacOS 12 / Python 3.10 / Dask",
+    "os": "macos-12",
+    "python-version": "3.10",
+    "backend": "dask",
+    "experimental": false,
+    "trigger": [
+      "schedule",
+      "workflow_dispatch"
+    ]
+  },
+  {
+    "name": "MacOS 12 / Python 3.10 / Local",
+    "os": "macos-12",
+    "python-version": "3.10",
+    "backend": "local",
+    "experimental": false,
+    "trigger": [
+      "schedule",
+      "workflow_dispatch"
+    ]
   }
 ]
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index d205f79f3..b26c502f4 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -225,34 +225,34 @@ jobs:
         env:
           COVALENT_EXECUTOR_DIR: doc/source/how_to/execution/custom_executors
 
-      # - name: Run SDK tests and measure coverage
-      #   id: sdk-tests
-      #   if: >
-      #     steps.modified-files.outputs.sdk == 'true'
-      #     || env.BUILD_AND_RUN_ALL
-      #   run: PYTHONPATH=$PWD/ pytest -vvs --reruns=5 tests/covalent_tests --cov=covalent --cov-config=.coveragerc
-
-      # - name: Generate SDK coverage report
-      #   id: sdk-coverage
-      #   if: steps.sdk-tests.outcome == 'success'
-      #   run: coverage xml -o sdk_coverage.xml
-
-      # - name: Run dispatcher tests and measure coverage
-      #   id: dispatcher-tests
-      #   if: >
-      #     steps.modified-files.outputs.dispatcher == 'true'
-      #     || env.BUILD_AND_RUN_ALL
-      #   run: PYTHONPATH=$PWD/ pytest -vvs --reruns=5 tests/covalent_dispatcher_tests --cov=covalent_dispatcher --cov-config=.coveragerc
-
-      # - name: Generate dispatcher coverage report
-      #   id: dispatcher-coverage
-      #   if: steps.dispatcher-tests.outcome == 'success'
-      #   run: coverage xml -o dispatcher_coverage.xml
+      - name: Run SDK tests and measure coverage
+        id: sdk-tests
+        if: >
+          steps.modified-files.outputs.sdk == 'true'
+          || env.BUILD_AND_RUN_ALL
+        run: PYTHONPATH=$PWD/ pytest -vvs --reruns=5 tests/covalent_tests --cov=covalent --cov-config=.coveragerc
+
+      - name: Generate SDK coverage report
+        id: sdk-coverage
+        if: steps.sdk-tests.outcome == 'success'
+        run: coverage xml -o sdk_coverage.xml
+
+      - name: Run dispatcher tests and measure coverage
+        id: dispatcher-tests
+        if: >
+          steps.modified-files.outputs.dispatcher == 'true'
+          || env.BUILD_AND_RUN_ALL
+        run: PYTHONPATH=$PWD/ pytest -vvs --reruns=5 tests/covalent_dispatcher_tests --cov=covalent_dispatcher --cov-config=.coveragerc
+
+      - name: Generate dispatcher coverage report
+        id: dispatcher-coverage
+        if: steps.dispatcher-tests.outcome == 'success'
+        run: coverage xml -o dispatcher_coverage.xml
 
       - name: Run functional tests and measure coverage
         id: functional-tests
         if: env.BUILD_AND_RUN_ALL
-        run: PYTHONPATH=$PWD/ pytest -vvs tests/functional_tests  --cov=covalent --cov=covalent_dispatcher --cov-config=.coveragerc
+        run: PYTHONPATH=$PWD/ pytest -vvs --reruns=5 tests/functional_tests  --cov=covalent --cov=covalent_dispatcher --cov-config=.coveragerc
 
       - name: Generate functional test coverage report
         id: functional-coverage
diff --git a/tests/functional_tests/choose_executor_test.py b/tests/functional_tests/choose_executor_test.py
index 716807e12..11a9993b9 100644
--- a/tests/functional_tests/choose_executor_test.py
+++ b/tests/functional_tests/choose_executor_test.py
@@ -43,7 +43,6 @@ def workflow(y):
     assert output.result == "input"
 
 
-# @pytest.mark.debug
 def test_using_executor_classes():
     """Test creating executor objects and using them in a simple electron."""
 
diff --git a/tests/functional_tests/docs_how_to_test.py b/tests/functional_tests/docs_how_to_test.py
index f9841bb69..572156508 100644
--- a/tests/functional_tests/docs_how_to_test.py
+++ b/tests/functional_tests/docs_how_to_test.py
@@ -51,7 +51,6 @@
 ]
 
 
-@pytest.mark.skip(reason="Temporarily skipping, to test whether this is the issue")
 @pytest.mark.parametrize("file, expected_return_value", zip(files, expected_return_values))
 def test_how_to_file(file, expected_return_value):
     if os.path.basename(file) not in ignore_files:
diff --git a/tests/functional_tests/qa_http_file_transfer_test.py b/tests/functional_tests/qa_http_file_transfer_test.py
index bd372c3eb..b3f4e00f7 100644
--- a/tests/functional_tests/qa_http_file_transfer_test.py
+++ b/tests/functional_tests/qa_http_file_transfer_test.py
@@ -20,7 +20,6 @@
 
 """Test http file transfer."""
 
-
 import covalent as ct