diff --git a/slc10-builder/packer.json b/slc10-builder/packer.json
index bb3fe2b..59b0ec2 100644
--- a/slc10-builder/packer.json
+++ b/slc10-builder/packer.json
@@ -11,7 +11,8 @@
       "commit": true,
       "changes": [
         "ENTRYPOINT [\"\"]",
-        "CMD [\"/bin/bash\"]"
+        "CMD [\"/bin/bash\"]",
+        "ENV PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
       ]
     }
   ],
diff --git a/slc10-builder/provision.sh b/slc10-builder/provision.sh
index f33df81..2f5fbf1 100644
--- a/slc10-builder/provision.sh
+++ b/slc10-builder/provision.sh
@@ -25,7 +25,8 @@ dnf config-manager --set-enabled crb
 dnf update -y
 dnf groups install -y 'Development Tools'
 # python3-{pip,setuptools} and s3cmd needed for Jenkins builds.
-dnf install -y alice-o2-full-deps python3-pip python3-setuptools s3cmd time
+# pigz: aliBuild uses it in place of gzip for package tarballs when present.
+dnf install -y alice-o2-full-deps python3-pip python3-setuptools s3cmd time pigz
 
 curl https://s3.cern.ch/swift/v1/alibuild-repo/bin/recc -L -o /usr/bin/recc
 chmod +x /usr/bin/recc