diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index ea5e9372e890c..9dc4398ef6f52 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -47,7 +47,7 @@ jobs:
     steps:
       - id: set-matrix
         run: |
-          if [ ! -z "$RELEASE_VERSION" ]; then
+          if [ -n "$RELEASE_VERSION" ]; then
             # For production release, we run on four python versions.
             echo '::set-output name=matrix::{"include":[{"name":"taichi","python":"3.6","conda_python":"py36"},{"name":"taichi","python":"3.7","conda_python":"py37"},{"name":"taichi","python":"3.8","conda_python":"py38"},{"name":"taichi","python":"3.9","conda_python":"py39"},{"name":"taichi","python":"3.10","conda_python":"py310"}]}"'
 
diff --git a/version.txt b/version.txt
index e6e6db4c47c64..188bef59283a9 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-v0.9.2
+v0.9.3