diff --git a/google-cloud-networkconnectivity-bom/pom.xml b/google-cloud-networkconnectivity-bom/pom.xml
index e974b98a..7e4d84c2 100644
--- a/google-cloud-networkconnectivity-bom/pom.xml
+++ b/google-cloud-networkconnectivity-bom/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-networkconnectivity-bom</artifactId>
-  <version>0.4.0</version><!-- {x-version-update:google-cloud-networkconnectivity:current} -->
+  <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-networkconnectivity:current} -->
   <packaging>pom</packaging>
   <parent>
     <groupId>com.google.cloud</groupId>
@@ -56,27 +56,27 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-networkconnectivity</artifactId>
-        <version>0.4.0</version><!-- {x-version-update:google-cloud-networkconnectivity:current} -->
+        <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-networkconnectivity:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-networkconnectivity-v1alpha1</artifactId>
-        <version>0.4.0</version><!-- {x-version-update:grpc-google-cloud-networkconnectivity-v1alpha1:current} -->
+        <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-networkconnectivity-v1alpha1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-networkconnectivity-v1</artifactId>
-        <version>0.4.0</version><!-- {x-version-update:grpc-google-cloud-networkconnectivity-v1:current} -->
+        <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-networkconnectivity-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-networkconnectivity-v1alpha1</artifactId>
-        <version>0.4.0</version><!-- {x-version-update:proto-google-cloud-networkconnectivity-v1alpha1:current} -->
+        <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-networkconnectivity-v1alpha1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-networkconnectivity-v1</artifactId>
-        <version>0.4.0</version><!-- {x-version-update:proto-google-cloud-networkconnectivity-v1:current} -->
+        <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-networkconnectivity-v1:current} -->
       </dependency>
     </dependencies>
   </dependencyManagement>
diff --git a/google-cloud-networkconnectivity/clirr-ignored-differences.xml b/google-cloud-networkconnectivity/clirr-ignored-differences.xml
new file mode 100644
index 00000000..0ab2896a
--- /dev/null
+++ b/google-cloud-networkconnectivity/clirr-ignored-differences.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- see http://www.mojohaus.org/clirr-maven-plugin/examples/ignored-differences.html -->
+<differences>
+  <difference>
+    <differenceType>7002</differenceType>
+    <className>com/google/cloud/networkconnectivity/v1/HubServiceClient*</className>
+    <method>* *activ*(*)</method>
+  </difference>
+  <difference>
+    <differenceType>7002</differenceType>
+    <className>com/google/cloud/networkconnectivity/v1/HubServiceSettings*</className>
+    <method>* *activ*(*)</method>
+  </difference>
+  <difference>
+    <differenceType>7002</differenceType>
+    <className>com/google/cloud/networkconnectivity/v1/stub/HubServiceStub*</className>
+    <method>* *activ*(*)</method>
+  </difference>
+  <difference>
+    <differenceType>7002</differenceType>
+    <className>com/google/cloud/networkconnectivity/v1/stub/GrpcHubServiceStub*</className>
+    <method>* *activ*(*)</method>
+  </difference>
+</differences>
diff --git a/google-cloud-networkconnectivity/pom.xml b/google-cloud-networkconnectivity/pom.xml
index 61fc444b..c9afd1a2 100644
--- a/google-cloud-networkconnectivity/pom.xml
+++ b/google-cloud-networkconnectivity/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-networkconnectivity</artifactId>
-  <version>0.4.0</version><!-- {x-version-update:google-cloud-networkconnectivity:current} -->
+  <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-networkconnectivity:current} -->
   <packaging>jar</packaging>
   <name>Google Network Connectivity Center</name>
   <url>https://github.com/googleapis/java-networkconnectivity</url>
@@ -11,7 +11,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-networkconnectivity-parent</artifactId>
-    <version>0.4.0</version><!-- {x-version-update:google-cloud-networkconnectivity:current} -->
+    <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-networkconnectivity:current} -->
   </parent>
   <properties>
     <site.installationModule>google-cloud-networkconnectivity</site.installationModule>
diff --git a/grpc-google-cloud-networkconnectivity-v1/clirr-ignored-differences.xml b/grpc-google-cloud-networkconnectivity-v1/clirr-ignored-differences.xml
new file mode 100644
index 00000000..2eae10c5
--- /dev/null
+++ b/grpc-google-cloud-networkconnectivity-v1/clirr-ignored-differences.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- see http://www.mojohaus.org/clirr-maven-plugin/examples/ignored-differences.html -->
+<differences>
+  <difference>
+    <differenceType>7002</differenceType>
+    <className>com/google/cloud/networkconnectivity/v1/HubServiceGrpc*</className>
+    <method>* get*(*)</method>
+  </difference>
+  <difference>
+    <differenceType>7002</differenceType>
+    <className>com/google/cloud/networkconnectivity/v1/HubServiceGrpc*</className>
+    <method>* *activ*(*)</method>
+  </difference>
+</differences>
diff --git a/grpc-google-cloud-networkconnectivity-v1/pom.xml b/grpc-google-cloud-networkconnectivity-v1/pom.xml
index 59bf02cd..7b5f727f 100644
--- a/grpc-google-cloud-networkconnectivity-v1/pom.xml
+++ b/grpc-google-cloud-networkconnectivity-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-networkconnectivity-v1</artifactId>
-  <version>0.4.0</version><!-- {x-version-update:grpc-google-cloud-networkconnectivity-v1:current} -->
+  <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-networkconnectivity-v1:current} -->
   <name>grpc-google-cloud-networkconnectivity-v1</name>
   <description>GRPC library for google-cloud-networkconnectivity</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-networkconnectivity-parent</artifactId>
-    <version>0.4.0</version><!-- {x-version-update:google-cloud-networkconnectivity:current} -->
+    <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-networkconnectivity:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/grpc-google-cloud-networkconnectivity-v1alpha1/pom.xml b/grpc-google-cloud-networkconnectivity-v1alpha1/pom.xml
index de463126..0f4db85f 100644
--- a/grpc-google-cloud-networkconnectivity-v1alpha1/pom.xml
+++ b/grpc-google-cloud-networkconnectivity-v1alpha1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-networkconnectivity-v1alpha1</artifactId>
-  <version>0.4.0</version><!-- {x-version-update:grpc-google-cloud-networkconnectivity-v1alpha1:current} -->
+  <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-networkconnectivity-v1alpha1:current} -->
   <name>grpc-google-cloud-networkconnectivity-v1alpha1</name>
   <description>GRPC library for google-cloud-networkconnectivity</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-networkconnectivity-parent</artifactId>
-    <version>0.4.0</version><!-- {x-version-update:google-cloud-networkconnectivity:current} -->
+    <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-networkconnectivity:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/pom.xml b/pom.xml
index 6b726f8f..e8868456 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-networkconnectivity-parent</artifactId>
   <packaging>pom</packaging>
-  <version>0.4.0</version><!-- {x-version-update:google-cloud-networkconnectivity:current} -->
+  <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-networkconnectivity:current} -->
   <name>Google Network Connectivity Center Parent</name>
   <url>https://github.com/googleapis/java-</url>
   <description>
@@ -61,27 +61,27 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-networkconnectivity</artifactId>
-        <version>0.4.0</version><!-- {x-version-update:google-cloud-networkconnectivity:current} -->
+        <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-networkconnectivity:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-networkconnectivity-v1</artifactId>
-        <version>0.4.0</version><!-- {x-version-update:proto-google-cloud-networkconnectivity-v1:current} -->
+        <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-networkconnectivity-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-networkconnectivity-v1</artifactId>
-        <version>0.4.0</version><!-- {x-version-update:grpc-google-cloud-networkconnectivity-v1:current} -->
+        <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-networkconnectivity-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-networkconnectivity-v1alpha1</artifactId>
-        <version>0.4.0</version><!-- {x-version-update:proto-google-cloud-networkconnectivity-v1alpha1:current} -->
+        <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-networkconnectivity-v1alpha1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-networkconnectivity-v1alpha1</artifactId>
-        <version>0.4.0</version><!-- {x-version-update:grpc-google-cloud-networkconnectivity-v1alpha1:current} -->
+        <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-networkconnectivity-v1alpha1:current} -->
       </dependency>
 
       <dependency>
diff --git a/proto-google-cloud-networkconnectivity-v1/clirr-ignored-differences.xml b/proto-google-cloud-networkconnectivity-v1/clirr-ignored-differences.xml
index 51a24032..a50e9ccf 100644
--- a/proto-google-cloud-networkconnectivity-v1/clirr-ignored-differences.xml
+++ b/proto-google-cloud-networkconnectivity-v1/clirr-ignored-differences.xml
@@ -16,4 +16,8 @@
     <className>com/google/cloud/networkconnectivity/v1/*OrBuilder</className>
     <method>boolean has*(*)</method>
   </difference>
+  <difference>
+    <differenceType>8001</differenceType>
+    <className>com/google/cloud/networkconnectivity/v1/*ctivateSpokeRequest*</className>
+  </difference>
 </differences>
diff --git a/proto-google-cloud-networkconnectivity-v1/pom.xml b/proto-google-cloud-networkconnectivity-v1/pom.xml
index 9854d5f0..8a69830b 100644
--- a/proto-google-cloud-networkconnectivity-v1/pom.xml
+++ b/proto-google-cloud-networkconnectivity-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-networkconnectivity-v1</artifactId>
-  <version>0.4.0</version><!-- {x-version-update:proto-google-cloud-networkconnectivity-v1:current} -->
+  <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-networkconnectivity-v1:current} -->
   <name>proto-google-cloud-networkconnectivity-v1</name>
   <description>Proto library for google-cloud-networkconnectivity</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-networkconnectivity-parent</artifactId>
-    <version>0.4.0</version><!-- {x-version-update:google-cloud-networkconnectivity:current} -->
+    <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-networkconnectivity:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/proto-google-cloud-networkconnectivity-v1alpha1/clirr-ignored-differences.xml b/proto-google-cloud-networkconnectivity-v1alpha1/clirr-ignored-differences.xml
index b76d7c3d..005ec13f 100644
--- a/proto-google-cloud-networkconnectivity-v1alpha1/clirr-ignored-differences.xml
+++ b/proto-google-cloud-networkconnectivity-v1alpha1/clirr-ignored-differences.xml
@@ -16,7 +16,7 @@
     <className>com/google/cloud/networkconnectivity/v1alpha1/*OrBuilder</className>
     <method>boolean has*(*)</method>
   </difference>
-  <difference>
+    <difference>
     <className>
       com/google/cloud/networkconnectivity/v1alpha1/SpokeOrBuilder
     </className>
diff --git a/proto-google-cloud-networkconnectivity-v1alpha1/pom.xml b/proto-google-cloud-networkconnectivity-v1alpha1/pom.xml
index 37bb2319..069abbf7 100644
--- a/proto-google-cloud-networkconnectivity-v1alpha1/pom.xml
+++ b/proto-google-cloud-networkconnectivity-v1alpha1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-networkconnectivity-v1alpha1</artifactId>
-  <version>0.4.0</version><!-- {x-version-update:proto-google-cloud-networkconnectivity-v1alpha1:current} -->
+  <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-networkconnectivity-v1alpha1:current} -->
   <name>proto-google-cloud-networkconnectivity-v1alpha1</name>
   <description>Proto library for google-cloud-networkconnectivity</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-networkconnectivity-parent</artifactId>
-    <version>0.4.0</version><!-- {x-version-update:google-cloud-networkconnectivity:current} -->
+    <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-networkconnectivity:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/versions.txt b/versions.txt
index ebe8192a..97a87e6d 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,8 +1,8 @@
 # Format:
 # module:released-version:current-version
 
-google-cloud-networkconnectivity:0.4.0:0.4.0
-grpc-google-cloud-networkconnectivity-v1alpha1:0.4.0:0.4.0
-grpc-google-cloud-networkconnectivity-v1:0.4.0:0.4.0
-proto-google-cloud-networkconnectivity-v1alpha1:0.4.0:0.4.0
-proto-google-cloud-networkconnectivity-v1:0.4.0:0.4.0
+google-cloud-networkconnectivity:0.4.0:0.4.1-SNAPSHOT
+grpc-google-cloud-networkconnectivity-v1alpha1:0.4.0:0.4.1-SNAPSHOT
+grpc-google-cloud-networkconnectivity-v1:0.4.0:0.4.1-SNAPSHOT
+proto-google-cloud-networkconnectivity-v1alpha1:0.4.0:0.4.1-SNAPSHOT
+proto-google-cloud-networkconnectivity-v1:0.4.0:0.4.1-SNAPSHOT