diff --git a/.github/workflows/release_maixcam.yml b/.github/workflows/release_maixcam.yml
index 083b0ef4..6a9e5aa3 100644
--- a/.github/workflows/release_maixcam.yml
+++ b/.github/workflows/release_maixcam.yml
@@ -112,9 +112,9 @@ jobs:
           echo "#!/bin/bash" > out/view_doc.sh
           echo "python -m http.server" >> out/view_doc.sh
           echo "python -m http.server" > out/view_doc.bat
-          mkdir ${doc_dir}/html
+          mkdir -p ${doc_dir}/html
           mv ./out/* ${doc_dir}/html/
-          mkdir ${doc_dir}/source
+          mkdir -p ${doc_dir}/source
           mv ./* ${doc_dir}/source/
           zip ${doc_dir}.zip -r $doc_dir
           cd ..
diff --git a/maix/version.py b/maix/version.py
index 8a90a155..f72e02cd 100644
--- a/maix/version.py
+++ b/maix/version.py
@@ -3,6 +3,6 @@
 
 version_major = 4
 version_minor = 4
-version_patch = 11
+version_patch = 12
 
 __version__ = "{}.{}.{}".format(version_major, version_minor, version_patch)