diff --git a/.github/workflows/shellcheck.yml b/.github/workflows/shellcheck.yml
index 9f88fbb..732385a 100644
--- a/.github/workflows/shellcheck.yml
+++ b/.github/workflows/shellcheck.yml
@@ -24,6 +24,7 @@ jobs:
   shellcheck:
     if: github.event.pull_request.draft == false
     runs-on: ubuntu-latest
+    timeout-minutes: 5
     permissions:
       contents: read
 
@@ -38,7 +39,9 @@ jobs:
           SCRIPTS_INPUT: ${{ inputs.scripts }}
           SEVERITY: ${{ inputs.severity }}
         run: |
-          sudo apt-get update -qq && sudo apt-get install -y -qq shellcheck
+          if ! command -v shellcheck >/dev/null 2>&1; then
+            sudo apt-get update -qq && sudo apt-get install -y -qq shellcheck
+          fi
           echo "ShellCheck version: $(shellcheck --version | head -2 | tail -1)"
           echo ""