diff --git a/.travis.yml b/.travis.yml
index fddb62a50..43f767230 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -32,14 +32,14 @@ matrix:
     services:
     - docker
     before_install:
-    - docker pull iostio/iost-dev:3.0.3
+    - docker pull iostio/iost-dev:3.0.4
     - git lfs install
     before_script:
     - git lfs pull
     script:
-    - docker run -it --rm -v $(pwd):/gopath/src/github.com/iost-official/go-iost iostio/iost-dev:3.0.3 make build
-    - docker run -it --rm -v $(pwd):/gopath/src/github.com/iost-official/go-iost iostio/iost-dev:3.0.3 make lint
-    - docker run -it --rm -v $(pwd):/gopath/src/github.com/iost-official/go-iost iostio/iost-dev:3.0.3 make test
+    - docker run -it --rm -v $(pwd):/gopath/src/github.com/iost-official/go-iost iostio/iost-dev:3.0.4 make build
+    - docker run -it --rm -v $(pwd):/gopath/src/github.com/iost-official/go-iost iostio/iost-dev:3.0.4 make lint
+    - docker run -it --rm -v $(pwd):/gopath/src/github.com/iost-official/go-iost iostio/iost-dev:3.0.4 make test
     after_success:
     - bash <(curl -s https://codecov.io/bash)
   - os: linux
@@ -49,7 +49,7 @@ matrix:
     services:
     - docker
     before_install:
-    - docker pull iostio/iost-dev:3.0.3
+    - docker pull iostio/iost-dev:3.0.4
     - git lfs install
     before_script:
     - git lfs pull
@@ -63,7 +63,7 @@ matrix:
     services:
     - docker
     before_install:
-    - docker pull iostio/iost-dev:3.0.3
+    - docker pull iostio/iost-dev:3.0.4
     - git lfs install
     - pyenv global 3.6 && pip install awscli
     - go get -u -v github.com/kubernetes-sigs/aws-iam-authenticator/cmd/aws-iam-authenticator
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e286fc3ad..41e667dbd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## v3.0.4
+
+Sat Mar 16 20:58:46 CST 2019
+
+- Optimize RPC stability.
+
 ## v3.0.3
 
 Fri Mar 15 16:36:17 CST 2019
diff --git a/Makefile b/Makefile
index 3b140e860..187c1b052 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 GO = go
 
-VERSION = 3.0.3
+VERSION = 3.0.4
 COMMIT = $(shell git rev-parse --short HEAD)
 PROJECT = github.com/iost-official/go-iost
 DOCKER_IMAGE = iostio/iost-node:$(VERSION)-$(COMMIT)
diff --git a/build/k8s/iserver.yaml b/build/k8s/iserver.yaml
index 0287bcc09..dd364abc3 100644
--- a/build/k8s/iserver.yaml
+++ b/build/k8s/iserver.yaml
@@ -32,7 +32,7 @@ spec:
     spec:
       containers:
         - name: iserver
-          image: "iostio/iost-node:3.0.3-$COMMIT"
+          image: "iostio/iost-node:3.0.4-$COMMIT"
           imagePullPolicy: "IfNotPresent"
           command:
             - /bin/bash
diff --git a/build/k8s/itest.yaml b/build/k8s/itest.yaml
index 0d553df1c..4a9391b8b 100644
--- a/build/k8s/itest.yaml
+++ b/build/k8s/itest.yaml
@@ -7,7 +7,7 @@ metadata:
 spec:
   containers:
   - name: itest
-    image: "iostio/iost-node:3.0.3-$COMMIT"
+    image: "iostio/iost-node:3.0.4-$COMMIT"
     imagePullPolicy: "IfNotPresent"
     command: ['/bin/bash', '-c', 'sleep infinity']
     resources: