diff --git a/alpha/alpha-server/src/main/resources/ssl.properties b/alpha/alpha-server/src/main/resources/ssl.properties
index dccd4c8..ff3c214 100644
--- a/alpha/alpha-server/src/main/resources/ssl.properties
+++ b/alpha/alpha-server/src/main/resources/ssl.properties
@@ -13,5 +13,5 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-ciphers = ECDHE-RSA-AES128-GCM-SHA256,ECDHE-RSA-AES256-GCM-SHA384,ECDHE-ECDSA-AES128-SHA256
+ciphers = ECDHE-RSA-AES128-GCM-SHA256,ECDHE-RSA-AES256-GCM-SHA384
 protocols = TLSv1.2
diff --git a/alpha/alpha-server/src/test/java/org/apache/servicecomb/pack/alpha/server/AlphaIntegrationWithSSLTest.java b/alpha/alpha-server/src/test/java/org/apache/servicecomb/pack/alpha/server/AlphaIntegrationWithSSLTest.java
index a3b0dfb..140238e 100644
--- a/alpha/alpha-server/src/test/java/org/apache/servicecomb/pack/alpha/server/AlphaIntegrationWithSSLTest.java
+++ b/alpha/alpha-server/src/test/java/org/apache/servicecomb/pack/alpha/server/AlphaIntegrationWithSSLTest.java
@@ -60,8 +60,7 @@
       sslContext = GrpcSslContexts.forClient().sslProvider(SslProvider.OPENSSL)
           .protocols("TLSv1.2","TLSv1.1")
           .ciphers(Arrays.asList("ECDHE-RSA-AES128-GCM-SHA256",
-              "ECDHE-RSA-AES256-GCM-SHA384",
-              "ECDHE-ECDSA-AES128-SHA256"))
+              "ECDHE-RSA-AES256-GCM-SHA384"))
           .trustManager(new File(classLoader.getResource("ca.crt").getFile()))
           .keyManager(new File(classLoader.getResource("client.crt").getFile()),
               new File(classLoader.getResource("client.pem").getFile())).build();
diff --git a/omega/omega-connector/omega-connector-grpc/src/main/resources/ssl.properties b/omega/omega-connector/omega-connector-grpc/src/main/resources/ssl.properties
index dccd4c8..ff3c214 100644
--- a/omega/omega-connector/omega-connector-grpc/src/main/resources/ssl.properties
+++ b/omega/omega-connector/omega-connector-grpc/src/main/resources/ssl.properties
@@ -13,5 +13,5 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-ciphers = ECDHE-RSA-AES128-GCM-SHA256,ECDHE-RSA-AES256-GCM-SHA384,ECDHE-ECDSA-AES128-SHA256
+ciphers = ECDHE-RSA-AES128-GCM-SHA256,ECDHE-RSA-AES256-GCM-SHA384
 protocols = TLSv1.2
diff --git a/omega/omega-connector/omega-connector-grpc/src/test/java/org/apache/servicecomb/pack/omega/connector/grpc/saga/SagaLoadBalanceSenderWithTLSTest.java b/omega/omega-connector/omega-connector-grpc/src/test/java/org/apache/servicecomb/pack/omega/connector/grpc/saga/SagaLoadBalanceSenderWithTLSTest.java
index 8007f19..6873661 100644
--- a/omega/omega-connector/omega-connector-grpc/src/test/java/org/apache/servicecomb/pack/omega/connector/grpc/saga/SagaLoadBalanceSenderWithTLSTest.java
+++ b/omega/omega-connector/omega-connector-grpc/src/test/java/org/apache/servicecomb/pack/omega/connector/grpc/saga/SagaLoadBalanceSenderWithTLSTest.java
@@ -107,8 +107,7 @@
         new File(classLoader.getResource("server.pem").getFile()))
         .protocols("TLSv1.2","TLSv1.1")
         .ciphers(Arrays.asList("ECDHE-RSA-AES128-GCM-SHA256",
-            "ECDHE-RSA-AES256-GCM-SHA384",
-            "ECDHE-ECDSA-AES128-SHA256"));
+            "ECDHE-RSA-AES256-GCM-SHA384"));
 
       sslClientContextBuilder.trustManager(new File(classLoader.getResource("client.crt").getFile()));
       sslClientContextBuilder.clientAuth(ClientAuth.REQUIRE);