diff --git a/etc/taskcluster/decision_task.py b/etc/taskcluster/decision_task.py
index 51a725976e8..10ad08cbeac 100644
--- a/etc/taskcluster/decision_task.py
+++ b/etc/taskcluster/decision_task.py
@@ -238,7 +238,7 @@ def upload_docs():
         .with_features("taskclusterProxy")
         .with_scopes("secrets:get:project/servo/doc.servo.org")
         .with_env(PY="""if 1:
-            import urllib, json, os
+            import urllib.request, json, os
             root_url = os.environ["TASKCLUSTER_PROXY_URL"]
             url = root_url + "/api/secrets/v1/secret/project/servo/doc.servo.org"
             token = json.load(urllib.request.urlopen(url))["secret"]["token"]
@@ -356,10 +356,10 @@ def uwp_nightly(rdp=False):
             "secrets:get:project/servo/windows-codesign-cert/latest",
         )
         .with_script(
-            "python3 mach build --release --target=x86_64-uwp-windows-msvc",
-            "python3 mach build --release --target=aarch64-uwp-windows-msvc",
-            "python3 mach package --release --target=x86_64-uwp-windows-msvc --uwp=x64 --uwp=arm64",
-            "python3 mach upload-nightly uwp --secret-from-taskcluster",
+            "python mach build --release --target=x86_64-uwp-windows-msvc",
+            "python mach build --release --target=aarch64-uwp-windows-msvc",
+            "python mach package --release --target=x86_64-uwp-windows-msvc --uwp=x64 --uwp=arm64",
+            "python mach upload-nightly uwp --secret-from-taskcluster",
         )
         .with_artifacts(appx_artifact)
         .with_max_run_time_minutes(3 * 60)