diff --git a/.github/workflows/test-pull-request.yml b/.github/workflows/test-pull-request.yml
index 6574ff7c..f1b3dc06 100644
--- a/.github/workflows/test-pull-request.yml
+++ b/.github/workflows/test-pull-request.yml
@@ -26,6 +26,8 @@ jobs:
       uses: actions/checkout@v3
 
     - name: Run Unit Tests
+      env:
+        GO_TEST_PARAMS: -count=5
       run: ./scripts/unit.sh
 
     - name: Get builders from integration.json
diff --git a/scripts/.util/tools.json b/scripts/.util/tools.json
index e2e977dd..6a5dbdbb 100644
--- a/scripts/.util/tools.json
+++ b/scripts/.util/tools.json
@@ -1,5 +1,5 @@
 {
-  "createpackage": "v1.70.0",
-  "jam": "v2.8.0",
-  "pack": "v0.34.2"
+  "createpackage": "v1.71.0",
+  "jam": "v2.9.0",
+  "pack": "v0.35.1"
 }
diff --git a/scripts/unit.sh b/scripts/unit.sh
index 8e193c79..dd130bf7 100755
--- a/scripts/unit.sh
+++ b/scripts/unit.sh
@@ -6,6 +6,8 @@ set -o pipefail
 readonly PROGDIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 readonly BUILDPACKDIR="$(cd "${PROGDIR}/.." && pwd)"
 
+GO_TEST_PARAMS="${GO_TEST_PARAMS:-}"
+
 # shellcheck source=SCRIPTDIR/.util/tools.sh
 source "${PROGDIR}/.util/tools.sh"
 
@@ -50,7 +52,7 @@ function unit::run() {
 
   testout=$(mktemp)
   pushd "${BUILDPACKDIR}" > /dev/null
-    if go test ./... -v -run Unit | tee "${testout}"; then
+    if go test ./... -v ${GO_TEST_PARAMS} -run Unit | tee "${testout}"; then
       util::tools::tests::checkfocus "${testout}"
       util::print::success "** GO Test Succeeded **"
     else