diff --git a/.circleci/config.yml b/.circleci/config.yml
index 770209a77d..6d5e40256f 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -7,6 +7,9 @@ jobs:
     environment:
       GRADLE_OPTS: -Dorg.gradle.workers.max=1 -Dorg.gradle.daemon=false -Dkotlin.compiler.execution.strategy="in-process"
     steps:
+      - run: rustup toolchain install nightly-2020-12-20
+      - run: rustup override set nightly-2020-12-20
+      - run: rustup target install armv7-linux-androideabi aarch64-linux-android i686-linux-android x86_64-linux-android
       - checkout
       - run: git submodule update --init --recursive
       - restore_cache:
diff --git a/README.md b/README.md
index b376c7f6bb..12e51f795a 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,12 @@ for Android TV ([beta](https://play.google.com/apps/testing/com.github.shadowsoc
 * Android SDK
   - Android NDK
 * Rust with Android targets installed  
-  `$ rustup target install armv7-linux-androideabi aarch64-linux-android i686-linux-android x86_64-linux-android`
+
+```bash
+  $ rustup toolchain install nightly-2020-12-20
+  $ rustup override set nightly-2020-12-20
+  $ rustup target install armv7-linux-androideabi aarch64-linux-android i686-linux-android x86_64-linux-android
+```
 
 ### BUILD
 
diff --git a/buildSrc/src/main/kotlin/Helpers.kt b/buildSrc/src/main/kotlin/Helpers.kt
index 8bc80be2d9..148834e226 100644
--- a/buildSrc/src/main/kotlin/Helpers.kt
+++ b/buildSrc/src/main/kotlin/Helpers.kt
@@ -56,8 +56,8 @@ fun Project.setupCore() {
     setupCommon()
     android.apply {
         defaultConfig {
-            versionCode = 5010750
-            versionName = "5.1.7-nightly"
+            versionCode = 5010850
+            versionName = "5.1.8-nightly"
         }
         compileOptions.isCoreLibraryDesugaringEnabled = true
         lintOptions {
diff --git a/core/build.gradle.kts b/core/build.gradle.kts
index ce41440723..160f1e5fb6 100644
--- a/core/build.gradle.kts
+++ b/core/build.gradle.kts
@@ -38,16 +38,9 @@ cargo {
     profile = findProperty("CARGO_PROFILE")?.toString() ?: currentFlavor
     extraCargoBuildArguments = listOf("--bin", libname!!)
     featureSpec.noDefaultBut(arrayOf(
-            "ring-aead-ciphers",
-            "sodium",
-            "rc4",
-            "aes-cfb",
-            "aes-ctr",
-            "camellia-cfb",
-            "openssl-vendored",
             "single-threaded",
             "local-flow-stat",
-            "local-dns-relay"))
+            "local-dns"))
     exec = { spec, toolchain ->
         spec.environment("RUST_ANDROID_GRADLE_LINKER_WRAPPER_PY", "$projectDir/$module/../linker-wrapper.py")
         spec.environment("RUST_ANDROID_GRADLE_TARGET", "target/${toolchain.target}/$profile/lib$libname.so")
diff --git a/core/src/main/java/com/github/shadowsocks/bg/ProxyInstance.kt b/core/src/main/java/com/github/shadowsocks/bg/ProxyInstance.kt
index 856beae0c4..7c7ab5dc77 100644
--- a/core/src/main/java/com/github/shadowsocks/bg/ProxyInstance.kt
+++ b/core/src/main/java/com/github/shadowsocks/bg/ProxyInstance.kt
@@ -90,8 +90,8 @@ class ProxyInstance(val profile: Profile, private val route: String = profile.ro
             throw BaseService.ExpectedExceptionWrapper(e)
         }.let { dns ->
             cmd += arrayListOf(
-                    "--dns-relay", "${DataStore.listenAddress}:${DataStore.portLocalDns}",
-                    "--remote-dns", "${dns.host ?: "0.0.0.0"}:${if (dns.port < 0) 53 else dns.port}")
+                    "--dns-addr", "${DataStore.listenAddress}:${DataStore.portLocalDns}",
+                    "--remote-dns-addr", "${dns.host ?: "0.0.0.0"}:${if (dns.port < 0) 53 else dns.port}")
         }
 
         if (route != Acl.ALL) {
diff --git a/core/src/main/rust/shadowsocks-rust b/core/src/main/rust/shadowsocks-rust
index 2a6451f0fe..3a1054acc5 160000
--- a/core/src/main/rust/shadowsocks-rust
+++ b/core/src/main/rust/shadowsocks-rust
@@ -1 +1 @@
-Subproject commit 2a6451f0feef2abbcf961be38edf13abdada11b5
+Subproject commit 3a1054acc54cfc23a1cd232aa0a45b66af4bd612