diff --git a/.github/workflows/test_common.yml b/.github/workflows/test_common.yml
index 695e9808..02ce6caa 100644
--- a/.github/workflows/test_common.yml
+++ b/.github/workflows/test_common.yml
@@ -37,7 +37,7 @@ jobs:
     name: tests
     strategy:
       matrix:
-        shard: [0,1,2,3,4,5,6,7,8]
+        shard: [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15]
 
     runs-on: ubuntu-latest
     timeout-minutes: 120
@@ -57,7 +57,7 @@ jobs:
 
     - name: Run tests
       run: |
-        pytest --ignore=tests/relay/test_rln.py --ignore=tests/store/test_cursor_many_msgs.py --reruns 2 --shard-id=${{ matrix.shard }} --num-shards=9  --alluredir=allure-results-${{ matrix.shard }}
+        pytest --ignore=tests/relay/test_rln.py --ignore=tests/store/test_cursor_many_msgs.py --reruns 2 --shard-id=${{ matrix.shard }} --num-shards=16  --alluredir=allure-results-${{ matrix.shard }}
 
     - name: Upload allure results
       if: always()