diff --git a/.github/workflows/user_project_ci.yml b/.github/workflows/user_project_ci.yml
index 1066f08..0377c64 100644
--- a/.github/workflows/user_project_ci.yml
+++ b/.github/workflows/user_project_ci.yml
@@ -35,13 +35,13 @@
 
       - name: Tarball PDK
         run: |
-          tar -cf /tmp/sky130A.tar -C $PDK_ROOT/sky130A .
+          tar -cf /tmp/pdk.tar -C $PDK_ROOT .
 
       - name: Upload PDK Tarball
         uses: actions/upload-artifact@v2
         with:
           name: pdk-tarball
-          path: /tmp/sky130A.tar
+          path: /tmp/pdk.tar
 
 
   mpw_precheck:
@@ -72,9 +72,9 @@
 
       - name: Unpack PDK Tarball
         run: |
-          sudo mkdir -p ${{ env.PDK_ROOT }}/sky130A
+          sudo mkdir -p ${{ env.PDK_ROOT }}
           sudo chown -R $USER:$USER ${{ env.PDK_ROOT }}
-          tar -xf /tmp/sky130A.tar -C $PDK_ROOT/sky130A .
+          tar -xf /tmp/pdk.tar -C $PDK_ROOT .
       - name: Run MPW-Precheck
         run: |
           export INPUT_DIRECTORY=$(pwd)
@@ -99,7 +99,7 @@
           path: |
             /home/runner/work/caravel_user_project/caravel_user_project/mpw_precheck_result/logs/*
 
-  user_project_flow:
+  user_project_flow_sky130A:
     timeout-minutes: 720
     runs-on: ubuntu-latest
     needs: [pdk]
@@ -115,6 +115,9 @@
       - name: Export PDK ROOT
         run: echo "PDK_ROOT=/home/runner/work/pdk" >> $GITHUB_ENV
 
+      - name: Export PDK
+        run: echo "PDK=sky130A" >> $GITHUB_ENV
+
       - name: Export OPENLANE ROOT
         run: echo "OPENLANE_ROOT=/home/runner/work/caravel_user_project/openlane" >> $GITHUB_ENV
 
@@ -126,13 +129,12 @@
 
       - name: Unpack PDK Tarball
         run: |
-          sudo mkdir -p ${{ env.PDK_ROOT }}/sky130A
+          sudo mkdir -p ${{ env.PDK_ROOT }}
           sudo chown -R $USER:$USER ${{ env.PDK_ROOT }}
-          tar -xf /tmp/sky130A.tar -C $PDK_ROOT/sky130A .
+          tar -xf /tmp/pdk.tar -C $PDK_ROOT .
 
       - name: Install dependencies
         run: |
-          export CARAVEL_LITE=0
           make install
           make install_mcw
           make openlane
@@ -158,3 +160,65 @@
           make verify-la_test2-gl 
           make verify-mprj_stimulus-gl 
           make verify-wb_port-gl
+
+  user_project_flow_sky130B:
+    timeout-minutes: 720
+    runs-on: ubuntu-latest
+    needs: [pdk]
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Export PDK ROOT
+        run: echo "PDK_ROOT=/home/runner/work/pdk" >> $GITHUB_ENV
+
+      - name: Export PDK
+        run: echo "PDK=sky130B" >> $GITHUB_ENV
+
+      - name: Export OPENLANE ROOT
+        run: echo "OPENLANE_ROOT=/home/runner/work/caravel_user_project/openlane" >> $GITHUB_ENV
+
+      - name: Download PDK Tarball
+        uses: actions/download-artifact@v2
+        with:
+          name: pdk-tarball
+          path: /tmp
+
+      - name: Unpack PDK Tarball
+        run: |
+          sudo mkdir -p ${{ env.PDK_ROOT }}
+          sudo chown -R $USER:$USER ${{ env.PDK_ROOT }}
+          tar -xf /tmp/pdk.tar -C $PDK_ROOT .
+
+      - name: Install dependencies
+        run: |
+          make install
+          make install_mcw
+          make openlane
+          make simenv
+
+      - name: Harden using Openlane
+        run: |
+          make user_proj_example
+          make user_project_wrapper
+
+      - name: Run DV RTL tests
+        run: |
+          make verify-io_ports-rtl 
+          make verify-la_test1-rtl 
+          make verify-la_test2-rtl 
+          make verify-mprj_stimulus-rtl 
+          make verify-wb_port-rtl
+
+      - name: Run DV GL tests
+        run: |
+          make verify-io_ports-gl 
+          make verify-la_test1-gl 
+          make verify-la_test2-gl 
+          make verify-mprj_stimulus-gl 
+          make verify-wb_port-gl
\ No newline at end of file
diff --git a/Makefile b/Makefile
index 84c0589..2a76e29 100644
--- a/Makefile
+++ b/Makefile
@@ -25,12 +25,14 @@
 export PDK_MAGIC_COMMIT=7d601628e4e05fd17fcb80c3552dacb64e9f6e7b
 export OPENLANE_TAG=2022.02.23_02.50.41
 export MISMATCHES_OK=1
-export PDKPATH?=$(PDK_ROOT)/sky130A
-export PDK?=sky130A
+export PDKPATH?=$(PDK_ROOT)/sky130B
 
 # Install lite version of caravel, (1): caravel-lite, (0): caravel
 CARAVEL_LITE?=1
 
+# PDK switch varient
+export PDK?=sky130B
+
 MPW_TAG ?= mpw-6c
 
 ifeq ($(CARAVEL_LITE),1)