diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index f0b77b7b7b7..cb98d0c4024 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -500,7 +500,6 @@ jobs:
     # NOTE: We always want to run job on master since we run some additional checks there (code
     # coverage, etc)
     # if: ${{ needs.pre_job.outputs.should_skip != 'true' || github.ref == 'refs/heads/master' }}
-    if: false
     name: '${{ matrix.name }} - Python ${{ matrix.python-version-short }}'
     runs-on: ubuntu-20.04
     strategy:
@@ -635,21 +634,21 @@ jobs:
         uses: actions/setup-python@v2
         with:
           python-version: '${{ matrix.python-version }}'
-      - name: Cache Python Dependencies
-        uses: actions/cache@v2
-        with:
-          path: |
-            ~/.cache/pip
-            virtualenv
-            ~/virtualenv
-          # TODO: maybe make the virtualenv a partial cache to exclude st2*?
-          # !virtualenv/lib/python*/site-packages/st2*
-          # !virtualenv/bin/st2*
-          key: ${{ runner.os }}-v4-python-${{ matrix.python-version }}-${{ hashFiles('requirements.txt', 'test-requirements.txt') }}
-          # Don't use alternative key as if requirements.txt has altered we
-          # don't want to retrieve previous cache
-          #restore-keys: |
-          #  ${{ runner.os }}-v4-python-${{ matrix.python }}-
+      #- name: Cache Python Dependencies
+      #  uses: actions/cache@v2
+      #  with:
+      #    path: |
+      #      ~/.cache/pip
+      #      virtualenv
+      #      ~/virtualenv
+      #    # TODO: maybe make the virtualenv a partial cache to exclude st2*?
+      #    # !virtualenv/lib/python*/site-packages/st2*
+      #    # !virtualenv/bin/st2*
+      #    key: ${{ runner.os }}-v4-python-${{ matrix.python-version }}-${{ hashFiles('requirements.txt', 'test-requirements.txt') }}
+      #    # Don't use alternative key as if requirements.txt has altered we
+      #    # don't want to retrieve previous cache
+      #    #restore-keys: |
+      #    #  ${{ runner.os }}-v4-python-${{ matrix.python }}-
       - name: Cache APT Dependencies
         id: cache-apt-deps
         uses: actions/cache@v2
@@ -666,6 +665,29 @@ jobs:
           # install dev dependencies for Python YAML and LDAP packages
           # https://github.com/StackStorm/st2-auth-ldap
           ./scripts/github/install-apt-packages-use-cache.sh
+
+      - name: Initialize Pants and its GHA caches
+        uses: pantsbuild/actions/init-pants@v6-scie-pants
+        # This action adds an env var to make pants use both pants.ci.toml & pants.toml.
+        # This action also creates 3 GHA caches (1 is optional).
+        # - `pants-setup` has the bootsrapped pants install
+        # - `pants-named-caches` has pip/wheel and PEX caches
+        # - `pants-lmdb-store` has the fine-grained process cache.
+        #   If we ever use a remote cache, then we can drop this.
+        #   Otherwise, we may need an additional workflow or job to delete old caches
+        #   if they are not expiring fast enough, and we hit the GHA 10GB per repo max.
+        with:
+          base-branch: master
+          # To ignore a bad cache, bump the cache* integer.
+          gha-cache-key: cache0
+          # This hash should include all of our lockfiles so that the pip/pex caches
+          # get invalidated on any transitive dependency update.
+          named-caches-hash: ${{ hashFiles('requirements.txt') }}
+          # enable the optional lmdb_store cache since we're not using remote caching.
+          cache-lmdb-store: 'true'
+          # install whatever version of python we need for our in-repo pants-plugins
+          setup-python-for-plugins: 'true'
+
       - name: Install virtualenv
         run: |
           ./scripts/github/install-virtualenv.sh
@@ -731,6 +753,14 @@ jobs:
         if: "${{ always() }}"
         run: docker rm --force redis || true
 
+
+      - name: Upload pants log
+        uses: actions/upload-artifact@v2
+        with:
+          name: pants-log-py${{ matrix.python-version }}-nose-${{ matrix.nosetests_node_index }}
+          path: .pants.d/pants.log
+        if: always()  # We want the log even on failures.
+
   slack-notification:
     name: Slack notification for failed master builds
     if: false