diff --git a/.circleci/config.yml b/.circleci/config.yml
index 9cc9e3a903..43a1003b64 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -9,7 +9,7 @@ jobs:
     steps:
       - checkout
       - run: git submodule update --init --recursive
-      - run: rustup default nightly && rustup update
+      - run: rustup default nightly-2022-08-28
       - run: cd core/src/main/rust/shadowsocks-rust && rustup target add armv7-linux-androideabi aarch64-linux-android i686-linux-android x86_64-linux-android
       - restore_cache:
           key: jars-{{ checksum "build.gradle.kts" }}
diff --git a/buildSrc/src/main/kotlin/Helpers.kt b/buildSrc/src/main/kotlin/Helpers.kt
index f0a1bd0d18..00b5f53dd7 100644
--- a/buildSrc/src/main/kotlin/Helpers.kt
+++ b/buildSrc/src/main/kotlin/Helpers.kt
@@ -59,8 +59,8 @@ fun Project.setupCore() {
     setupCommon()
     android.apply {
         defaultConfig {
-            versionCode = 5030050
-            versionName = "5.3.0-nightly"
+            versionCode = 5030150
+            versionName = "5.3.1-nightly"
         }
         compileOptions.isCoreLibraryDesugaringEnabled = true
         lint.apply {