diff --git a/.github/workflows/sep-tests.yml b/.github/workflows/sep-tests.yml
index cc05ca92e6..ffa24cb8a5 100644
--- a/.github/workflows/sep-tests.yml
+++ b/.github/workflows/sep-tests.yml
@@ -315,6 +315,7 @@ jobs:
         run: |
           set -euo pipefail
           # install ss
+          sudo chmod 1777 /tmp
           sudo apt update && sudo apt install -y iproute2
           RUNNER_WORKSPACE_PREFIX=${RUNNER_WORKSPACE_PREFIX:-${HOME}}
           COMPOSE_PROJECT_NAME="${GITHUB_RUN_ID}-${DOC_ENGINE}"
@@ -772,6 +773,7 @@ jobs:
         run: |
           set -euo pipefail
           # install ss
+          sudo chmod 1777 /tmp
           sudo apt update && sudo apt install -y iproute2
           RUNNER_WORKSPACE_PREFIX=${RUNNER_WORKSPACE_PREFIX:-${HOME}}
           COMPOSE_PROJECT_NAME="${GITHUB_RUN_ID}-${DOC_ENGINE}"