diff --git a/ci/build-ui.sh b/ci/build-ui.sh
index 0dba4e8..21086ab 100644
--- a/ci/build-ui.sh
+++ b/ci/build-ui.sh
@@ -1,6 +1,7 @@
 #!/bin/sh -ex
 
 export TEMP="${PWD}/tmp"
+mkdir "${TEMP}"
 
 # https://github.com/npm/cli/issues/3208#issuecomment-1002990902
 # Work around crazy performance issue in npm@7 / npm@8