diff --git a/.github/workflows/workflow.yml b/.github/workflows/workflow.yml
index b4ad2ee..7d91222 100644
--- a/.github/workflows/workflow.yml
+++ b/.github/workflows/workflow.yml
@@ -18,7 +18,7 @@ on:
   push:
 
 env:
-  MATRIX_RUNNERS: 30
+  MATRIX_RUNNERS: 9
 
 jobs:
 
@@ -61,7 +61,7 @@ jobs:
         id: set-matrix
         run: |
           source .env
-          ./scripts/get_boards_samples_pairs.py -c zephyr.yaml | shuf > boards_sample_pairs
+          ./scripts/get_boards_samples_pairs.py -c zephyr.yaml | shuf -n 10 > boards_sample_pairs
           echo "matrix=`./scripts/generate_matrix.py`" >> $GITHUB_OUTPUT
           ls -lah