diff --git a/.github/actions/composite-perf/action.yml b/.github/actions/composite-perf/action.yml
index e7f8cee96b..60a94ba77f 100644
--- a/.github/actions/composite-perf/action.yml
+++ b/.github/actions/composite-perf/action.yml
@@ -70,5 +70,5 @@ runs:
         cd build
         echo "perf_tests=$(realpath perf_tests.data)" >> $GITHUB_OUTPUT
         echo "perf_scap=$(realpath perf_scap.data)" >> $GITHUB_OUTPUT
-        echo "heaptrack_tests=$(realpath heaptrack_tests.data)" >> $GITHUB_OUTPUT
-        echo "heaptrack_scap=$(realpath heaptrack_scap.data)" >> $GITHUB_OUTPUT
\ No newline at end of file
+        echo "heaptrack_tests=$(realpath heaptrack_tests.data.zst)" >> $GITHUB_OUTPUT
+        echo "heaptrack_scap=$(realpath heaptrack_scap.data.zst)" >> $GITHUB_OUTPUT
\ No newline at end of file
diff --git a/.github/workflows/perf.yml b/.github/workflows/perf.yml
index e6f2c18628..a4f5779af4 100644
--- a/.github/workflows/perf.yml
+++ b/.github/workflows/perf.yml
@@ -37,11 +37,11 @@ jobs:
 
       - name: Diff from master - heaptrack unit tests
         run: |
-          sudo heaptrack_print heaptrack_tests.data -d ${{ steps.perf.outputs.heaptrack_tests }} &> heaptrack_tests_diff.txt
+          sudo heaptrack_print heaptrack_tests.data.zst -d ${{ steps.perf.outputs.heaptrack_tests }} &> heaptrack_tests_diff.txt
 
       - name: Diff from master - heaptrack scap file
         run: |
-          sudo heaptrack_print heaptrack_scap.data -d ${{ steps.perf.outputs.heaptrack_scap }} &> heaptrack_scap_diff.txt
+          sudo heaptrack_print heaptrack_scap.data.zst -d ${{ steps.perf.outputs.heaptrack_scap }} &> heaptrack_scap_diff.txt
 
       - name: Archive perf diff
         uses: actions/upload-artifact@a8a3f3ad30e3422c9c7b888a15615d19a852ae32 # v3.1.3