diff --git a/api/src/main/java/io/opencensus/common/OpenCensusLibraryInformation.java b/api/src/main/java/io/opencensus/common/OpenCensusLibraryInformation.java
index 234e6d19a..1019def9d 100644
--- a/api/src/main/java/io/opencensus/common/OpenCensusLibraryInformation.java
+++ b/api/src/main/java/io/opencensus/common/OpenCensusLibraryInformation.java
@@ -29,7 +29,7 @@ public final class OpenCensusLibraryInformation {
    *
    * @since 0.8
    */
-  public static final String VERSION = "0.29.0"; // CURRENT_OPENCENSUS_VERSION
+  public static final String VERSION = "0.31.1"; // CURRENT_OPENCENSUS_VERSION
 
   private OpenCensusLibraryInformation() {}
 }
diff --git a/build.gradle b/build.gradle
index 5bfef1e13..09d45fd55 100644
--- a/build.gradle
+++ b/build.gradle
@@ -51,7 +51,7 @@ subprojects {
     }
 
     group = "io.opencensus"
-    version = "0.31.0" // CURRENT_OPENCENSUS_VERSION
+    version = "0.31.1" // CURRENT_OPENCENSUS_VERSION
 
     sourceCompatibility = 1.7
     targetCompatibility = 1.7
diff --git a/contrib/grpc_metrics/src/main/java/io/opencensus/contrib/grpc/metrics/RpcMeasureConstants.java b/contrib/grpc_metrics/src/main/java/io/opencensus/contrib/grpc/metrics/RpcMeasureConstants.java
index 215e4de79..54047d34f 100644
--- a/contrib/grpc_metrics/src/main/java/io/opencensus/contrib/grpc/metrics/RpcMeasureConstants.java
+++ b/contrib/grpc_metrics/src/main/java/io/opencensus/contrib/grpc/metrics/RpcMeasureConstants.java
@@ -235,7 +235,7 @@ public final class RpcMeasureConstants {
    */
   public static final MeasureLong GRPC_CLIENT_RETRIES_PER_CALL =
       Measure.MeasureLong.create(
-          "grpc.io/client/retries_per_call", "Number of retries per call.", COUNT);
+          "grpc.io/client/retries_per_call", "Number of retries per call", COUNT);
 
   /**
    * {@link Measure} for total number of transparent retries made during the client call.
@@ -244,9 +244,7 @@ public final class RpcMeasureConstants {
    */
   public static final MeasureLong GRPC_CLIENT_TRANSPARENT_RETRIES_PER_CALL =
       Measure.MeasureLong.create(
-          "grpc.io/client/transparent_retries_per_call",
-          "Number of transparent retries per call.",
-          COUNT);
+          "grpc.io/client/transparent_retries_per_call", "Transparent retries per call", COUNT);
 
   /**
    * {@link Measure} for total time of delay while there is no active attempt during the client
@@ -254,9 +252,9 @@ public final class RpcMeasureConstants {
    *
    * @since 0.28
    */
-  public static final MeasureLong GRPC_CLIENT_RETRY_DELAY_PER_CALL =
-      Measure.MeasureLong.create(
-          "grpc.io/client/retry_delay_per_call", "Retry delay per call.", MILLISECOND);
+  public static final MeasureDouble GRPC_CLIENT_RETRY_DELAY_PER_CALL =
+      Measure.MeasureDouble.create(
+          "grpc.io/client/retry_delay_per_call", "Retry delay per call", MILLISECOND);
 
   /**
    * {@link Measure} for gRPC client error counts.
diff --git a/examples/build.gradle b/examples/build.gradle
index c1010bb21..729b402fc 100644
--- a/examples/build.gradle
+++ b/examples/build.gradle
@@ -31,7 +31,7 @@ repositories {
 }
 
 group = "io.opencensus"
-version = "0.31.0" // CURRENT_OPENCENSUS_VERSION
+version = "0.31.1" // CURRENT_OPENCENSUS_VERSION
 
 def opencensusVersion = "0.30.0" // LATEST_OPENCENSUS_RELEASE_VERSION
 def grpcVersion = "1.32.2" // CURRENT_GRPC_VERSION
diff --git a/examples/pom.xml b/examples/pom.xml
index 2aab89989..879073e78 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -5,7 +5,7 @@
   <groupId>io.opencensus</groupId>
   <artifactId>opencensus-examples</artifactId>
   <packaging>jar</packaging>
-  <version>0.31.0</version><!-- CURRENT_OPENCENSUS_VERSION -->
+  <version>0.31.1</version><!-- CURRENT_OPENCENSUS_VERSION -->
   <name>opencensus-examples</name>
   <url>http://maven.apache.org</url>
   <properties>
diff --git a/examples/spring/servlet/build.gradle b/examples/spring/servlet/build.gradle
index d5e6723e3..908ffd970 100644
--- a/examples/spring/servlet/build.gradle
+++ b/examples/spring/servlet/build.gradle
@@ -30,7 +30,7 @@ repositories {
 }
 
 group = "io.opencensus"
-version = "0.30.0" // CURRENT_OPENCENSUS_VERSION
+version = "0.31.1" // CURRENT_OPENCENSUS_VERSION
 
 def opencensusVersion = "0.26.0" // LATEST_OPENCENSUS_RELEASE_VERSION
 def prometheusVersion = "0.6.0"
@@ -85,7 +85,7 @@ apply plugin: 'io.spring.dependency-management'
 bootJar {
     mainClassName = 'com.baeldung.Application'
     baseName = 'opencensus-examples-spring-servlet'
-    version = "0.31.0" // CURRENT_OPENCENSUS_VERSION
+    version = "0.31.1" // CURRENT_OPENCENSUS_VERSION
 }
 
 sourceCompatibility = 1.8
diff --git a/exporters/metrics/ocagent/src/main/java/io/opencensus/exporter/metrics/ocagent/OcAgentNodeUtils.java b/exporters/metrics/ocagent/src/main/java/io/opencensus/exporter/metrics/ocagent/OcAgentNodeUtils.java
index 6c2099450..fe1ebabb2 100644
--- a/exporters/metrics/ocagent/src/main/java/io/opencensus/exporter/metrics/ocagent/OcAgentNodeUtils.java
+++ b/exporters/metrics/ocagent/src/main/java/io/opencensus/exporter/metrics/ocagent/OcAgentNodeUtils.java
@@ -39,7 +39,7 @@ final class OcAgentNodeUtils {
 
   // The current version of the OpenCensus OC-Agent Exporter.
   @VisibleForTesting
-  static final String OC_AGENT_EXPORTER_VERSION = "0.31.0"; // CURRENT_OPENCENSUS_VERSION
+  static final String OC_AGENT_EXPORTER_VERSION = "0.31.1"; // CURRENT_OPENCENSUS_VERSION
 
   @Nullable
   private static final io.opencensus.resource.Resource AUTO_DETECTED_RESOURCE =
diff --git a/exporters/trace/ocagent/src/main/java/io/opencensus/exporter/trace/ocagent/OcAgentNodeUtils.java b/exporters/trace/ocagent/src/main/java/io/opencensus/exporter/trace/ocagent/OcAgentNodeUtils.java
index 7ffd3629a..c1e556d98 100644
--- a/exporters/trace/ocagent/src/main/java/io/opencensus/exporter/trace/ocagent/OcAgentNodeUtils.java
+++ b/exporters/trace/ocagent/src/main/java/io/opencensus/exporter/trace/ocagent/OcAgentNodeUtils.java
@@ -38,7 +38,7 @@ final class OcAgentNodeUtils {
 
   // The current version of the OpenCensus OC-Agent Exporter.
   @VisibleForTesting
-  static final String OC_AGENT_EXPORTER_VERSION = "0.31.0"; // CURRENT_OPENCENSUS_VERSION
+  static final String OC_AGENT_EXPORTER_VERSION = "0.31.1"; // CURRENT_OPENCENSUS_VERSION
 
   @Nullable
   private static final io.opencensus.resource.Resource AUTO_DETECTED_RESOURCE =