diff --git a/.github/workflows/extension-test.yml b/.github/workflows/extension-test.yml
index 71b2d9d9..fa078187 100644
--- a/.github/workflows/extension-test.yml
+++ b/.github/workflows/extension-test.yml
@@ -17,10 +17,10 @@ on:
 env:
   DOCKER_REGISTRY: docker-registry.wikimedia.org
   DOCKER_ORG: releng
-  QUIBBLE_DOCKER_IMAGE: quibble-buster-php74
-  # There is no quibble-buster-php74-coverage yet
-  COVERAGE_DOCKER_IMAGE: quibble-buster-php73-coverage
-  PHAN_DOCKER_IMAGE: mediawiki-phan-php74
+  QUIBBLE_DOCKER_IMAGE: quibble-buster-php81
+  # There is no quibble-buster-php81-coverage yet
+  COVERAGE_DOCKER_IMAGE: quibble-buster-php74-coverage
+  PHAN_DOCKER_IMAGE: mediawiki-phan-php81
 
 jobs:
   test:
@@ -75,26 +75,19 @@ jobs:
           fi
           echo MEDIAWIKI_VERSION="${MEDIAWIKI_VERSION}" >> $GITHUB_ENV
 
-          if [ "${{ matrix.stage }}" == 'phan' ]; then
-            export DOCKER_IMAGE="${PHAN_DOCKER_IMAGE}"
-          elif [ "${{ matrix.stage }}" == coverage ]; then
-            export DOCKER_IMAGE="${COVERAGE_DOCKER_IMAGE}"
-          else
-            export DOCKER_IMAGE="${QUIBBLE_DOCKER_IMAGE}"
-          fi
-          echo "DOCKER_IMAGE=${DOCKER_IMAGE}" >> $GITHUB_ENV
-
           # Get the latest docker tag (Ref: https://github.com/thcipriani/dockerregistry)
-          DOCKER_LATEST_TAG="$(curl -sL "https://${DOCKER_REGISTRY}/v2/${DOCKER_ORG}/${DOCKER_IMAGE}/tags/list" |
+          QUIBBLE_DOCKER_LATEST_TAG="$(curl -sL "https://${DOCKER_REGISTRY}/v2/${DOCKER_ORG}/${QUIBBLE_DOCKER_IMAGE}/tags/list" |
             python3 -c 'import json;print("\n".join(json.loads(input())["tags"]))' |
             grep -v latest | sort -Vr | head -1)"
-          echo "DOCKER_LATEST_TAG=${DOCKER_LATEST_TAG}" >> $GITHUB_ENV
+          echo "QUIBBLE_DOCKER_LATEST_TAG=${QUIBBLE_DOCKER_LATEST_TAG}" >> $GITHUB_ENV
           if [ "${{ matrix.stage }}" == 'phan' ]; then
-            echo "QUIBBLE_DOCKER_LATEST_TAG=$(curl -sL "https://${DOCKER_REGISTRY}/v2/${DOCKER_ORG}/${QUIBBLE_DOCKER_IMAGE}/tags/list" |
+            echo "PHAN_DOCKER_LATEST_TAG=$(curl -sL "https://${DOCKER_REGISTRY}/v2/${DOCKER_ORG}/${PHAN_DOCKER_IMAGE}/tags/list" |
               python3 -c 'import json;print("\n".join(json.loads(input())["tags"]))' |
               grep -v latest | sort -Vr | head -1)" >> $GITHUB_ENV
           elif [ "${{ matrix.stage }}" == 'coverage' ]; then
-            echo "QUIBBLE_DOCKER_LATEST_TAG=${DOCKER_LATEST_TAG}" >> $GITHUB_ENV
+            echo "COVERAGE_DOCKER_LATEST_TAG=$(curl -sL "https://${DOCKER_REGISTRY}/v2/${DOCKER_ORG}/${COVERAGE_DOCKER_IMAGE}/tags/list" |
+              python3 -c 'import json;print("\n".join(json.loads(input())["tags"]))' |
+              grep -v latest | sort -Vr | head -1)" >> $GITHUB_ENV
           fi
 
           # Resolve dependencies
@@ -105,26 +98,46 @@ jobs:
             echo "DEPENDENCIES=$(python3 rd.py)" >> $GITHUB_ENV
           fi
 
-      - name: Cache docker image
-        uses: actions/cache@v3
-        with:
-          path: /home/runner/docker-images/${{ env.DOCKER_IMAGE }}
-          key: ${{ env.DOCKER_IMAGE }}:${{ env.DOCKER_LATEST_TAG }}
-      - name: Load or pull docker image
-        run: |
-          docker load -i /home/runner/docker-images/"${DOCKER_IMAGE}" || \
-            docker pull "${DOCKER_REGISTRY}/${DOCKER_ORG}/${DOCKER_IMAGE}:${DOCKER_LATEST_TAG}"
       - name: Cache quibble docker image
-        if: ${{ matrix.stage == 'coverage' || matrix.stage == 'phan' }}
         uses: actions/cache@v3
         with:
           path: /home/runner/docker-images/${{ env.QUIBBLE_DOCKER_IMAGE }}
           key: ${{ env.QUIBBLE_DOCKER_IMAGE }}:${{ env.QUIBBLE_DOCKER_LATEST_TAG }}
       - name: Load or pull quibble docker image
-        if: ${{ matrix.stage == 'coverage' || matrix.stage == 'phan' }}
         run: |
-          docker load -i /home/runner/docker-images/"${QUIBBLE_DOCKER_IMAGE}" || \
+          if [ -f /home/runner/docker-images/"${QUIBBLE_DOCKER_IMAGE}" ]; then
+            docker load -i /home/runner/docker-images/"${QUIBBLE_DOCKER_IMAGE}"
+          else
             docker pull "${DOCKER_REGISTRY}/${DOCKER_ORG}/${QUIBBLE_DOCKER_IMAGE}:${QUIBBLE_DOCKER_LATEST_TAG}"
+          fi
+      - name: Cache quibble coverage docker image
+        if: matrix.stage == 'coverage'
+        uses: actions/cache@v3
+        with:
+          path: /home/runner/docker-images/${{ env.COVERAGE_DOCKER_IMAGE }}
+          key: ${{ env.COVERAGE_DOCKER_IMAGE }}:${{ env.COVERAGE_DOCKER_LATEST_TAG }}
+      - name: Cache phan docker image
+        if: matrix.stage == 'phan'
+        uses: actions/cache@v3
+        with:
+          path: /home/runner/docker-images/${{ env.PHAN_DOCKER_IMAGE }}
+          key: ${{ env.PHAN_DOCKER_IMAGE }}:${{ env.PHAN_DOCKER_LATEST_TAG }}
+      - name: Load or pull quibble coverage docker image
+        if: matrix.stage == 'coverage'
+        run: |
+          if [ -f /home/runner/docker-images/"${COVERAGE_DOCKER_IMAGE}" ]; then
+            docker load -i /home/runner/docker-images/"${COVERAGE_DOCKER_IMAGE}"
+          else
+            docker pull "${DOCKER_REGISTRY}/${DOCKER_ORG}/${COVERAGE_DOCKER_IMAGE}:${COVERAGE_DOCKER_LATEST_TAG}"
+          fi
+      - name: Load or pull phan docker image
+        if: matrix.stage == 'phan'
+        run: |
+          if [ -f /home/runner/docker-images/"${PHAN_DOCKER_IMAGE}" ]; then
+            docker load -i /home/runner/docker-images/"${PHAN_DOCKER_IMAGE}"
+          else
+            docker pull "${DOCKER_REGISTRY}/${DOCKER_ORG}/${PHAN_DOCKER_IMAGE}:${PHAN_DOCKER_LATEST_TAG}"
+          fi
 
       - name: Cache MediaWiki installation
         uses: actions/cache@v3
@@ -138,7 +151,57 @@ jobs:
             git clone -b "${MEDIAWIKI_VERSION}" --depth 1 https://gerrit.wikimedia.org/r/mediawiki/core src
             git clone --recurse-submodules -b "${MEDIAWIKI_VERSION}" --depth 1 https://gerrit.wikimedia.org/r/mediawiki/skins/Vector src/skins/Vector
             for dep in $DEPENDENCIES; do
-              git clone --recurse-submodules -b "${MEDIAWIKI_VERSION}" --depth 1 "https://gerrit.wikimedia.org/r/${dep}" src/"$(echo $dep | cut -d'/' -f2,3)"
+              if [ "$dep" = 'mediawiki/extensions/Wikibase' ]; then
+                git clone -b "${MEDIAWIKI_VERSION}" --depth 1 "https://gerrit.wikimedia.org/r/${dep}" src/"$(echo $dep | cut -d'/' -f2,3)"
+
+                cd src/"$(echo $dep | cut -d'/' -f2,3)"
+                # https://gerrit.wikimedia.org/r/q/I2037cd8bb5d568021472e048900649028b5dcc62
+                git apply << 'EOF'
+          diff --git a/.gitmodules b/.gitmodules
+          index df41c768af..e9926d6ddd 100644
+          --- a/.gitmodules
+          +++ b/.gitmodules
+          @@ -3,13 +3,13 @@
+           	url = https://gerrit.wikimedia.org/r/data-values/value-view
+           [submodule "view/lib/wikibase-serialization"]
+           	path = view/lib/wikibase-serialization
+          -	url = https://phabricator.wikimedia.org/source/wikibase-serialization.git
+          +	url = https://github.com/wmde/WikibaseSerializationJavaScript.git
+           [submodule "view/lib/wikibase-data-values"]
+           	path = view/lib/wikibase-data-values
+          -	url = https://phabricator.wikimedia.org/source/datavalues-javascript.git
+          +	url = https://github.com/wmde/DataValuesJavaScript.git
+           [submodule "view/lib/wikibase-data-model"]
+           	path = view/lib/wikibase-data-model
+          -	url = https://phabricator.wikimedia.org/source/wikibase-data-model.git
+          +	url = https://github.com/wmde/WikibaseDataModelJavaScript.git
+           [submodule "view/lib/wikibase-termbox"]
+           	path = view/lib/wikibase-termbox
+           	url = https://gerrit.wikimedia.org/r/wikibase/termbox
+          EOF
+                git submodule update --init
+                cd -
+              elif [ "$dep" = 'mediawiki/extensions/WikibaseLexeme' ]; then
+                git clone -b "${MEDIAWIKI_VERSION}" --depth 1 "https://gerrit.wikimedia.org/r/${dep}" src/"$(echo $dep | cut -d'/' -f2,3)"
+
+                cd src/"$(echo $dep | cut -d'/' -f2,3)"
+                # https://gerrit.wikimedia.org/r/q/I2037cd8bb5d568021472e048900649028b5dcc62
+                git apply << 'EOF'
+          diff --git a/.gitmodules b/.gitmodules
+          index 51ab4cd..97dff70 100644
+          --- a/.gitmodules
+          +++ b/.gitmodules
+          @@ -1,3 +1,3 @@
+           [submodule "resources/special/new-lexeme"]
+           	path = resources/special/new-lexeme
+          -	url = https://phabricator.wikimedia.org/diffusion/NLSP/new-lexeme-special-page.git
+          +	url = https://github.com/wmde/new-lexeme-special-page.git
+          EOF
+                git submodule update --init
+                cd -
+              else
+                git clone --recurse-submodules -b "${MEDIAWIKI_VERSION}" --depth 1 "https://gerrit.wikimedia.org/r/${dep}" src/"$(echo $dep | cut -d'/' -f2,3)"
+              fi
             done
           fi
           git -C src/ log -n 1 --format="%H"
@@ -198,7 +261,7 @@ jobs:
             docker run \
               -e "THING_SUBNAME=${{ env.TYPE }}s/${{ env.EXTENSION_NAME }}" \
               -v "$(pwd)"/src:/mediawiki \
-              "${DOCKER_REGISTRY}/${DOCKER_ORG}/${DOCKER_IMAGE}:${DOCKER_LATEST_TAG}" \
+              "${DOCKER_REGISTRY}/${DOCKER_ORG}/${PHAN_DOCKER_IMAGE}:${PHAN_DOCKER_LATEST_TAG}" \
               --color
           elif [ "${{ matrix.stage }}" == 'coverage' ]; then
             if [ -d tests/phpunit ]; then
@@ -215,7 +278,7 @@ jobs:
                   -v "$(pwd)"/cache:/cache \
                   -v "$(pwd)"/src:/workspace/src \
                   -v "$(pwd)"/cover:/workspace/cover \
-                  "${DOCKER_REGISTRY}/${DOCKER_ORG}/${DOCKER_IMAGE}:${DOCKER_LATEST_TAG}" \
+                  "${DOCKER_REGISTRY}/${DOCKER_ORG}/${COVERAGE_DOCKER_IMAGE}:${COVERAGE_DOCKER_LATEST_TAG}" \
                   --skip-zuul \
                   --skip-deps \
                   -c "${COMMEND}"
@@ -227,7 +290,7 @@ jobs:
               -e "ZUUL_PROJECT=mediawiki/${{ env.TYPE }}s/${{ env.EXTENSION_NAME }}" \
               -v "$(pwd)"/cache:/cache \
               -v "$(pwd)"/src:/workspace/src \
-              "${DOCKER_REGISTRY}/${DOCKER_ORG}/${DOCKER_IMAGE}:${DOCKER_LATEST_TAG}" \
+              "${DOCKER_REGISTRY}/${DOCKER_ORG}/${QUIBBLE_DOCKER_IMAGE}:${QUIBBLE_DOCKER_LATEST_TAG}" \
               --skip-zuul \
               --packages-source composer \
               --run "${{ matrix.stage }}" \
@@ -247,5 +310,13 @@ jobs:
           # See https://doc.wikimedia.org/quibble/index.html#remove-localsettings-php-between-runs
           rm "$(pwd)"/src/LocalSettings.php || true
           mkdir -p docker-images
-          docker save -o "$(pwd)/docker-images/${DOCKER_IMAGE}" \
-            "${DOCKER_REGISTRY}/${DOCKER_ORG}/${DOCKER_IMAGE}:${DOCKER_LATEST_TAG}"
+
+          docker save -o "$(pwd)/docker-images/${QUIBBLE_DOCKER_IMAGE}" \
+            "${DOCKER_REGISTRY}/${DOCKER_ORG}/${QUIBBLE_DOCKER_IMAGE}:${QUIBBLE_DOCKER_LATEST_TAG}"
+          if [ -n "$PHAN_DOCKER_LATEST_TAG" ]; then
+            docker save -o "$(pwd)/docker-images/${PHAN_DOCKER_IMAGE}" \
+              "${DOCKER_REGISTRY}/${DOCKER_ORG}/${PHAN_DOCKER_IMAGE}:${PHAN_DOCKER_LATEST_TAG}"
+          elif [ -n "$COVERAGE_DOCKER_LATEST_TAG" ]; then
+          docker save -o "$(pwd)/docker-images/${COVERAGE_DOCKER_IMAGE}" \
+            "${DOCKER_REGISTRY}/${DOCKER_ORG}/${COVERAGE_DOCKER_IMAGE}:${COVERAGE_DOCKER_LATEST_TAG}"
+          fi
diff --git a/.github/workflows/release-and-submit.yml b/.github/workflows/release-and-submit.yml
index 27bbe2f4..df8008b8 100644
--- a/.github/workflows/release-and-submit.yml
+++ b/.github/workflows/release-and-submit.yml
@@ -13,7 +13,7 @@ name: Upload Release Asset and submit a PR to docker-mediawiki repository
 
 jobs:
   build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-18.04
     steps:
       - name: Checkout code
         uses: actions/checkout@v3
@@ -21,7 +21,7 @@ jobs:
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: '8.1'
+          php-version: '7.3'
           tools: composer:v1
 
       - uses: actions/setup-node@v3
@@ -30,7 +30,7 @@ jobs:
 
       - name: Set tag name
         id: tag_name
-        run: echo "tag_name=$(basename ${{ github.ref }})" >> $GITHUB_OUTPUT
+        run: echo "::set-output name=tag_name::$(basename ${{ github.ref }})"
       - name: Build project
         run: |
           composer update --no-dev