diff --git a/android-interop-testing/app/build.gradle b/android-interop-testing/app/build.gradle
index 3da331ef0b..03d76c4ba1 100644
--- a/android-interop-testing/app/build.gradle
+++ b/android-interop-testing/app/build.gradle
@@ -42,7 +42,7 @@ protobuf {
     protoc { artifact = 'com.google.protobuf:protoc:3.7.0' }
     plugins {
         javalite { artifact = "com.google.protobuf:protoc-gen-javalite:3.0.0" }
-        grpc { artifact = 'io.grpc:protoc-gen-grpc-java:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+        grpc { artifact = 'io.grpc:protoc-gen-grpc-java:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
         }
     }
     generateProtoTasks {
@@ -71,11 +71,11 @@ dependencies {
     implementation 'junit:junit:4.12'
 
     // You need to build grpc-java to obtain the grpc libraries below.
-    implementation 'io.grpc:grpc-auth:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
-    implementation 'io.grpc:grpc-okhttp:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
-    implementation 'io.grpc:grpc-protobuf-lite:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
-    implementation 'io.grpc:grpc-stub:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
-    implementation 'io.grpc:grpc-testing:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+    implementation 'io.grpc:grpc-auth:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+    implementation 'io.grpc:grpc-okhttp:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+    implementation 'io.grpc:grpc-protobuf-lite:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+    implementation 'io.grpc:grpc-stub:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+    implementation 'io.grpc:grpc-testing:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
 
     // workaround for https://github.com/google/protobuf/issues/1889
     protobuf 'com.google.protobuf:protobuf-java:3.0.2'
diff --git a/android/build.gradle b/android/build.gradle
index b095a42bb7..6ee0bfc76e 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -1,7 +1,7 @@
 apply plugin: 'com.android.library'
 
 group = "io.grpc"
-version = "1.20.0-SNAPSHOT" // CURRENT_GRPC_VERSION
+version = "1.21.0-SNAPSHOT" // CURRENT_GRPC_VERSION
 description = 'gRPC: Android'
 
 buildscript {
@@ -44,9 +44,9 @@ dependencies {
     errorprone 'com.google.errorprone:error_prone_core:2.3.2'
     errorproneJavac 'com.google.errorprone:javac:9+181-r4173-1'
 
-    implementation 'io.grpc:grpc-core:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+    implementation 'io.grpc:grpc-core:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
 
-    testImplementation 'io.grpc:grpc-okhttp:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+    testImplementation 'io.grpc:grpc-okhttp:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
     testImplementation 'junit:junit:4.12'
     testImplementation 'org.robolectric:robolectric:3.7.1'
     testImplementation 'com.google.truth:truth:0.39'
diff --git a/build.gradle b/build.gradle
index d5560222aa..22981ef558 100644
--- a/build.gradle
+++ b/build.gradle
@@ -49,7 +49,7 @@ subprojects {
     }
 
     group = "io.grpc"
-    version = "1.20.0-SNAPSHOT" // CURRENT_GRPC_VERSION
+    version = "1.21.0-SNAPSHOT" // CURRENT_GRPC_VERSION
 
     sourceCompatibility = 1.7
     targetCompatibility = 1.7
diff --git a/compiler/src/test/golden/TestDeprecatedService.java.txt b/compiler/src/test/golden/TestDeprecatedService.java.txt
index 06e6bbb8b4..08935e947e 100644
--- a/compiler/src/test/golden/TestDeprecatedService.java.txt
+++ b/compiler/src/test/golden/TestDeprecatedService.java.txt
@@ -21,7 +21,7 @@ import static io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall;
  * </pre>
  */
 @javax.annotation.Generated(
-    value = "by gRPC proto compiler (version 1.20.0-SNAPSHOT)",
+    value = "by gRPC proto compiler (version 1.21.0-SNAPSHOT)",
     comments = "Source: grpc/testing/compiler/test.proto")
 @java.lang.Deprecated
 public final class TestDeprecatedServiceGrpc {
diff --git a/compiler/src/test/golden/TestService.java.txt b/compiler/src/test/golden/TestService.java.txt
index bef10d648f..741088601f 100644
--- a/compiler/src/test/golden/TestService.java.txt
+++ b/compiler/src/test/golden/TestService.java.txt
@@ -21,7 +21,7 @@ import static io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall;
  * </pre>
  */
 @javax.annotation.Generated(
-    value = "by gRPC proto compiler (version 1.20.0-SNAPSHOT)",
+    value = "by gRPC proto compiler (version 1.21.0-SNAPSHOT)",
     comments = "Source: grpc/testing/compiler/test.proto")
 public final class TestServiceGrpc {
 
diff --git a/compiler/src/testLite/golden/TestDeprecatedService.java.txt b/compiler/src/testLite/golden/TestDeprecatedService.java.txt
index 7761ebaad7..71d5679f5b 100644
--- a/compiler/src/testLite/golden/TestDeprecatedService.java.txt
+++ b/compiler/src/testLite/golden/TestDeprecatedService.java.txt
@@ -21,7 +21,7 @@ import static io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall;
  * </pre>
  */
 @javax.annotation.Generated(
-    value = "by gRPC proto compiler (version 1.20.0-SNAPSHOT)",
+    value = "by gRPC proto compiler (version 1.21.0-SNAPSHOT)",
     comments = "Source: grpc/testing/compiler/test.proto")
 @java.lang.Deprecated
 public final class TestDeprecatedServiceGrpc {
diff --git a/compiler/src/testLite/golden/TestService.java.txt b/compiler/src/testLite/golden/TestService.java.txt
index 99f0d572dd..902aba373c 100644
--- a/compiler/src/testLite/golden/TestService.java.txt
+++ b/compiler/src/testLite/golden/TestService.java.txt
@@ -21,7 +21,7 @@ import static io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall;
  * </pre>
  */
 @javax.annotation.Generated(
-    value = "by gRPC proto compiler (version 1.20.0-SNAPSHOT)",
+    value = "by gRPC proto compiler (version 1.21.0-SNAPSHOT)",
     comments = "Source: grpc/testing/compiler/test.proto")
 public final class TestServiceGrpc {
 
diff --git a/compiler/src/testNano/golden/TestDeprecatedService.java.txt b/compiler/src/testNano/golden/TestDeprecatedService.java.txt
index 377cca36fa..6491f1b40d 100644
--- a/compiler/src/testNano/golden/TestDeprecatedService.java.txt
+++ b/compiler/src/testNano/golden/TestDeprecatedService.java.txt
@@ -23,7 +23,7 @@ import java.io.IOException;
  * </pre>
  */
 @javax.annotation.Generated(
-    value = "by gRPC proto compiler (version 1.20.0-SNAPSHOT)",
+    value = "by gRPC proto compiler (version 1.21.0-SNAPSHOT)",
     comments = "Source: grpc/testing/compiler/test.proto")
 @java.lang.Deprecated
 public final class TestDeprecatedServiceGrpc {
diff --git a/compiler/src/testNano/golden/TestService.java.txt b/compiler/src/testNano/golden/TestService.java.txt
index 1c8778de3e..765dce495a 100644
--- a/compiler/src/testNano/golden/TestService.java.txt
+++ b/compiler/src/testNano/golden/TestService.java.txt
@@ -23,7 +23,7 @@ import java.io.IOException;
  * </pre>
  */
 @javax.annotation.Generated(
-    value = "by gRPC proto compiler (version 1.20.0-SNAPSHOT)",
+    value = "by gRPC proto compiler (version 1.21.0-SNAPSHOT)",
     comments = "Source: grpc/testing/compiler/test.proto")
 public final class TestServiceGrpc {
 
diff --git a/core/src/main/java/io/grpc/internal/GrpcUtil.java b/core/src/main/java/io/grpc/internal/GrpcUtil.java
index cf1256e8df..ec0418e949 100644
--- a/core/src/main/java/io/grpc/internal/GrpcUtil.java
+++ b/core/src/main/java/io/grpc/internal/GrpcUtil.java
@@ -202,7 +202,7 @@ public final class GrpcUtil {
 
   public static final Splitter ACCEPT_ENCODING_SPLITTER = Splitter.on(',').trimResults();
 
-  private static final String IMPLEMENTATION_VERSION = "1.20.0-SNAPSHOT"; // CURRENT_GRPC_VERSION
+  private static final String IMPLEMENTATION_VERSION = "1.21.0-SNAPSHOT"; // CURRENT_GRPC_VERSION
 
   /**
    * The default delay in nanos before we send a keepalive.
diff --git a/cronet/build.gradle b/cronet/build.gradle
index a20de8129b..348b5a2347 100644
--- a/cronet/build.gradle
+++ b/cronet/build.gradle
@@ -39,8 +39,8 @@ android {
 }
 
 dependencies {
-    implementation 'io.grpc:grpc-core:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
-    testImplementation 'io.grpc:grpc-testing:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+    implementation 'io.grpc:grpc-core:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+    testImplementation 'io.grpc:grpc-testing:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
 
     implementation "org.chromium.net:cronet-embedded:66.3359.158"
 
diff --git a/documentation/android-channel-builder.md b/documentation/android-channel-builder.md
index 9c9b842fcd..453c8db167 100644
--- a/documentation/android-channel-builder.md
+++ b/documentation/android-channel-builder.md
@@ -36,8 +36,8 @@ In your `build.gradle` file, include a dependency on both `grpc-android` and
 `grpc-okhttp`:
 
 ```
-compile 'io.grpc:grpc-android:1.20.0' // CURRENT_GRPC_VERSION
-compile 'io.grpc:grpc-okhttp:1.20.0' // CURRENT_GRPC_VERSION
+compile 'io.grpc:grpc-android:1.21.0' // CURRENT_GRPC_VERSION
+compile 'io.grpc:grpc-okhttp:1.21.0' // CURRENT_GRPC_VERSION
 ```
 
 You will also need permission to access the device's network state in your
diff --git a/examples/android/clientcache/app/build.gradle b/examples/android/clientcache/app/build.gradle
index fda79b567d..9f4a2c18ca 100644
--- a/examples/android/clientcache/app/build.gradle
+++ b/examples/android/clientcache/app/build.gradle
@@ -31,7 +31,7 @@ protobuf {
     protoc { artifact = 'com.google.protobuf:protoc:3.4.0' }
     plugins {
         javalite { artifact = "com.google.protobuf:protoc-gen-javalite:3.0.0" }
-        grpc { artifact = 'io.grpc:protoc-gen-grpc-java:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+        grpc { artifact = 'io.grpc:protoc-gen-grpc-java:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
         }
     }
     generateProtoTasks {
@@ -49,12 +49,12 @@ dependencies {
     implementation 'com.android.support:appcompat-v7:27.0.2'
 
     // You need to build grpc-java to obtain these libraries below.
-    implementation 'io.grpc:grpc-okhttp:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
-    implementation 'io.grpc:grpc-protobuf-lite:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
-    implementation 'io.grpc:grpc-stub:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+    implementation 'io.grpc:grpc-okhttp:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+    implementation 'io.grpc:grpc-protobuf-lite:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+    implementation 'io.grpc:grpc-stub:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
     implementation 'javax.annotation:javax.annotation-api:1.2'
 
     testImplementation 'junit:junit:4.12'
     testImplementation 'com.google.truth:truth:0.36'
-    testImplementation 'io.grpc:grpc-testing:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+    testImplementation 'io.grpc:grpc-testing:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
 }
diff --git a/examples/android/helloworld/app/build.gradle b/examples/android/helloworld/app/build.gradle
index 1cd6adc4e7..0cb8c67037 100644
--- a/examples/android/helloworld/app/build.gradle
+++ b/examples/android/helloworld/app/build.gradle
@@ -30,7 +30,7 @@ protobuf {
     protoc { artifact = 'com.google.protobuf:protoc:3.7.0' }
     plugins {
         javalite { artifact = "com.google.protobuf:protoc-gen-javalite:3.0.0" }
-        grpc { artifact = 'io.grpc:protoc-gen-grpc-java:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+        grpc { artifact = 'io.grpc:protoc-gen-grpc-java:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
         }
     }
     generateProtoTasks {
@@ -48,8 +48,8 @@ dependencies {
     implementation 'com.android.support:appcompat-v7:27.0.2'
 
     // You need to build grpc-java to obtain these libraries below.
-    implementation 'io.grpc:grpc-okhttp:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
-    implementation 'io.grpc:grpc-protobuf-lite:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
-    implementation 'io.grpc:grpc-stub:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+    implementation 'io.grpc:grpc-okhttp:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+    implementation 'io.grpc:grpc-protobuf-lite:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+    implementation 'io.grpc:grpc-stub:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
     implementation 'javax.annotation:javax.annotation-api:1.2'
 }
diff --git a/examples/android/routeguide/app/build.gradle b/examples/android/routeguide/app/build.gradle
index ee6c141360..ac69a6a78c 100644
--- a/examples/android/routeguide/app/build.gradle
+++ b/examples/android/routeguide/app/build.gradle
@@ -29,7 +29,7 @@ protobuf {
     protoc { artifact = 'com.google.protobuf:protoc:3.7.0' }
     plugins {
         javalite { artifact = "com.google.protobuf:protoc-gen-javalite:3.0.0" }
-        grpc { artifact = 'io.grpc:protoc-gen-grpc-java:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+        grpc { artifact = 'io.grpc:protoc-gen-grpc-java:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
         }
     }
     generateProtoTasks {
@@ -47,8 +47,8 @@ dependencies {
     implementation 'com.android.support:appcompat-v7:27.0.2'
 
     // You need to build grpc-java to obtain these libraries below.
-    implementation 'io.grpc:grpc-okhttp:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
-    implementation 'io.grpc:grpc-protobuf-lite:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
-    implementation 'io.grpc:grpc-stub:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+    implementation 'io.grpc:grpc-okhttp:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+    implementation 'io.grpc:grpc-protobuf-lite:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+    implementation 'io.grpc:grpc-stub:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
     implementation 'javax.annotation:javax.annotation-api:1.2'
 }
diff --git a/examples/build.gradle b/examples/build.gradle
index 527d64a0e6..1696dadc5c 100644
--- a/examples/build.gradle
+++ b/examples/build.gradle
@@ -21,7 +21,7 @@ targetCompatibility = 1.7
 
 // Feel free to delete the comment at the next line. It is just for safely
 // updating the version in our release process.
-def grpcVersion = '1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+def grpcVersion = '1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
 def protobufVersion = '3.7.0'
 def protocVersion = protobufVersion
 
diff --git a/examples/example-alts/build.gradle b/examples/example-alts/build.gradle
index 047c7c809e..07fc5e8220 100644
--- a/examples/example-alts/build.gradle
+++ b/examples/example-alts/build.gradle
@@ -22,7 +22,7 @@ targetCompatibility = 1.7
 
 // Feel free to delete the comment at the next line. It is just for safely
 // updating the version in our release process.
-def grpcVersion = '1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+def grpcVersion = '1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
 def protocVersion = '3.7.0'
 
 dependencies {
diff --git a/examples/example-gauth/build.gradle b/examples/example-gauth/build.gradle
index dfe66c3fff..58df8da34e 100644
--- a/examples/example-gauth/build.gradle
+++ b/examples/example-gauth/build.gradle
@@ -22,7 +22,7 @@ targetCompatibility = 1.7
 
 // Feel free to delete the comment at the next line. It is just for safely
 // updating the version in our release process.
-def grpcVersion = '1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+def grpcVersion = '1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
 def protobufVersion = '3.7.0'
 def protocVersion = protobufVersion
 
diff --git a/examples/example-gauth/pom.xml b/examples/example-gauth/pom.xml
index c348344878..68cbdd86b4 100644
--- a/examples/example-gauth/pom.xml
+++ b/examples/example-gauth/pom.xml
@@ -6,13 +6,13 @@
   <packaging>jar</packaging>
   <!-- Feel free to delete the comment at the end of these lines. It is just
        for safely updating the version in our release process. -->
-  <version>1.20.0-SNAPSHOT</version><!-- CURRENT_GRPC_VERSION -->
+  <version>1.21.0-SNAPSHOT</version><!-- CURRENT_GRPC_VERSION -->
   <name>example-gauth</name>
   <url>https://github.com/grpc/grpc-java</url>
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <grpc.version>1.20.0-SNAPSHOT</grpc.version><!-- CURRENT_GRPC_VERSION -->
+    <grpc.version>1.21.0-SNAPSHOT</grpc.version><!-- CURRENT_GRPC_VERSION -->
     <protobuf.version>3.7.0</protobuf.version>
     <!-- required for jdk9 -->
     <maven.compiler.source>1.7</maven.compiler.source>
diff --git a/examples/example-kotlin/android/helloworld/app/build.gradle b/examples/example-kotlin/android/helloworld/app/build.gradle
index 1fd6139791..d95e5191ca 100644
--- a/examples/example-kotlin/android/helloworld/app/build.gradle
+++ b/examples/example-kotlin/android/helloworld/app/build.gradle
@@ -52,7 +52,7 @@ protobuf {
     protoc { artifact = 'com.google.protobuf:protoc:3.7.0' }
     plugins {
         javalite { artifact = "com.google.protobuf:protoc-gen-javalite:3.0.0" }
-        grpc { artifact = 'io.grpc:protoc-gen-grpc-java:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+        grpc { artifact = 'io.grpc:protoc-gen-grpc-java:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
         }
     }
     generateProtoTasks {
@@ -72,9 +72,9 @@ dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
 
     // You need to build grpc-java to obtain these libraries below.
-    implementation 'io.grpc:grpc-okhttp:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
-    implementation 'io.grpc:grpc-protobuf-lite:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
-    implementation 'io.grpc:grpc-stub:1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+    implementation 'io.grpc:grpc-okhttp:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+    implementation 'io.grpc:grpc-protobuf-lite:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+    implementation 'io.grpc:grpc-stub:1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
 }
 
 repositories { mavenCentral() }
diff --git a/examples/example-kotlin/build.gradle b/examples/example-kotlin/build.gradle
index 372038d35f..820891c103 100644
--- a/examples/example-kotlin/build.gradle
+++ b/examples/example-kotlin/build.gradle
@@ -23,7 +23,7 @@ repositories {
 
 // Feel free to delete the comment at the next line. It is just for safely
 // updating the version in our release process.
-def grpcVersion = '1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+def grpcVersion = '1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
 
 dependencies {
     def kotlinVerion = plugins.findPlugin("org.jetbrains.kotlin.jvm").kotlinPluginVersion
diff --git a/examples/example-tls/build.gradle b/examples/example-tls/build.gradle
index 0482b8a38e..574b3561fb 100644
--- a/examples/example-tls/build.gradle
+++ b/examples/example-tls/build.gradle
@@ -22,7 +22,7 @@ targetCompatibility = 1.7
 
 // Feel free to delete the comment at the next line. It is just for safely
 // updating the version in our release process.
-def grpcVersion = '1.20.0-SNAPSHOT' // CURRENT_GRPC_VERSION
+def grpcVersion = '1.21.0-SNAPSHOT' // CURRENT_GRPC_VERSION
 def nettyTcNativeVersion = '2.0.20.Final'
 def protocVersion = '3.7.0'
 
diff --git a/examples/example-tls/pom.xml b/examples/example-tls/pom.xml
index 518855ea00..1555c6d572 100644
--- a/examples/example-tls/pom.xml
+++ b/examples/example-tls/pom.xml
@@ -6,13 +6,13 @@
   <packaging>jar</packaging>
   <!-- Feel free to delete the comment at the end of these lines. It is just
        for safely updating the version in our release process. -->
-  <version>1.20.0-SNAPSHOT</version><!-- CURRENT_GRPC_VERSION -->
+  <version>1.21.0-SNAPSHOT</version><!-- CURRENT_GRPC_VERSION -->
   <name>example-tls</name>
   <url>https://github.com/grpc/grpc-java</url>
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <grpc.version>1.20.0-SNAPSHOT</grpc.version><!-- CURRENT_GRPC_VERSION -->
+    <grpc.version>1.21.0-SNAPSHOT</grpc.version><!-- CURRENT_GRPC_VERSION -->
     <protoc.version>3.7.0</protoc.version>
     <netty.tcnative.version>2.0.20.Final</netty.tcnative.version>
     <!-- required for jdk9 -->
diff --git a/examples/pom.xml b/examples/pom.xml
index 1bdeb9ab8c..87885da184 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -6,13 +6,13 @@
   <packaging>jar</packaging>
   <!-- Feel free to delete the comment at the end of these lines. It is just
        for safely updating the version in our release process. -->
-  <version>1.20.0-SNAPSHOT</version><!-- CURRENT_GRPC_VERSION -->
+  <version>1.21.0-SNAPSHOT</version><!-- CURRENT_GRPC_VERSION -->
   <name>examples</name>
   <url>https://github.com/grpc/grpc-java</url>
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <grpc.version>1.20.0-SNAPSHOT</grpc.version><!-- CURRENT_GRPC_VERSION -->
+    <grpc.version>1.21.0-SNAPSHOT</grpc.version><!-- CURRENT_GRPC_VERSION -->
     <protobuf.version>3.7.0</protobuf.version>
     <protoc.version>3.7.0</protoc.version>
     <!-- required for jdk9 -->