diff --git a/Gopkg.lock b/Gopkg.lock
index 457191a36..dbf3f6017 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -465,14 +465,14 @@
 
 [[projects]]
   branch = "master"
-  digest = "1:dc73d65f40ea05b1d0db96ae5491b6ebc162bb59b3ac5a252cdf87848bc7a4b7"
+  digest = "1:8a965ebe2d83033f6a07e926357f7341b6c7f42e165a3e13c7c8113b953a265b"
   name = "knative.dev/test-infra"
   packages = [
     "scripts",
     "tools/dep-collector",
   ]
   pruneopts = "UT"
-  revision = "5e04d955cdb9a460b5d3f2a699bddcab22c8af94"
+  revision = "891d25bbf859bfc829b515068cc3e167a7fcc528"
 
 [solve-meta]
   analyzer-name = "dep"
diff --git a/vendor/knative.dev/test-infra/scripts/presubmit-tests.sh b/vendor/knative.dev/test-infra/scripts/presubmit-tests.sh
index bdd74754a..4243a381d 100755
--- a/vendor/knative.dev/test-infra/scripts/presubmit-tests.sh
+++ b/vendor/knative.dev/test-infra/scripts/presubmit-tests.sh
@@ -306,6 +306,8 @@ function main() {
     kubectl version --client
     echo ">> go version"
     go version
+    echo ">> python3 version"
+    python3 --version
     echo ">> git version"
     git version
     echo ">> ko version"