diff --git a/CHANGELOG.md b/CHANGELOG.md
index a7df57b71..adee17fdf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+### [4.5.5](https://github.com/googleapis/java-dialogflow/compare/v4.5.4...v4.5.5) (2022-03-01)
+
+
+### Dependencies
+
+* update dependency com.google.cloud:google-cloud-core to v2.5.5 ([#867](https://github.com/googleapis/java-dialogflow/issues/867)) ([775349e](https://github.com/googleapis/java-dialogflow/commit/775349eb61205b50c4b39703f7e8db9db4c59ca0))
+
 ### [4.5.4](https://github.com/googleapis/java-dialogflow/compare/v4.5.3...v4.5.4) (2022-02-28)
 
 
diff --git a/README.md b/README.md
index 40dc97b54..ee88331cc 100644
--- a/README.md
+++ b/README.md
@@ -56,13 +56,13 @@ implementation 'com.google.cloud:google-cloud-dialogflow'
 If you are using Gradle without BOM, add this to your dependencies
 
 ```Groovy
-implementation 'com.google.cloud:google-cloud-dialogflow:4.5.3'
+implementation 'com.google.cloud:google-cloud-dialogflow:4.5.4'
 ```
 
 If you are using SBT, add this to your dependencies
 
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-dialogflow" % "4.5.3"
+libraryDependencies += "com.google.cloud" % "google-cloud-dialogflow" % "4.5.4"
 ```
 
 ## Authentication
diff --git a/google-cloud-dialogflow-bom/pom.xml b/google-cloud-dialogflow-bom/pom.xml
index fc0ba4471..508710378 100644
--- a/google-cloud-dialogflow-bom/pom.xml
+++ b/google-cloud-dialogflow-bom/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-dialogflow-bom</artifactId>
-  <version>4.5.4</version><!-- {x-version-update:google-cloud-dialogflow:current} -->
+  <version>4.5.5</version><!-- {x-version-update:google-cloud-dialogflow:current} -->
   <packaging>pom</packaging>
   <parent>
     <groupId>com.google.cloud</groupId>
@@ -52,27 +52,27 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-dialogflow</artifactId>
-        <version>4.5.4</version><!-- {x-version-update:google-cloud-dialogflow:current} -->
+        <version>4.5.5</version><!-- {x-version-update:google-cloud-dialogflow:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-dialogflow-v2beta1</artifactId>
-        <version>0.103.4</version><!-- {x-version-update:grpc-google-cloud-dialogflow-v2beta1:current} -->
+        <version>0.103.5</version><!-- {x-version-update:grpc-google-cloud-dialogflow-v2beta1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-dialogflow-v2</artifactId>
-        <version>4.5.4</version><!-- {x-version-update:grpc-google-cloud-dialogflow-v2:current} -->
+        <version>4.5.5</version><!-- {x-version-update:grpc-google-cloud-dialogflow-v2:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-dialogflow-v2</artifactId>
-        <version>4.5.4</version><!-- {x-version-update:proto-google-cloud-dialogflow-v2:current} -->
+        <version>4.5.5</version><!-- {x-version-update:proto-google-cloud-dialogflow-v2:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-dialogflow-v2beta1</artifactId>
-        <version>0.103.4</version><!-- {x-version-update:proto-google-cloud-dialogflow-v2beta1:current} -->
+        <version>0.103.5</version><!-- {x-version-update:proto-google-cloud-dialogflow-v2beta1:current} -->
       </dependency>
     </dependencies>
   </dependencyManagement>
diff --git a/google-cloud-dialogflow/pom.xml b/google-cloud-dialogflow/pom.xml
index 2f0b159c6..8f055ae2e 100644
--- a/google-cloud-dialogflow/pom.xml
+++ b/google-cloud-dialogflow/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-dialogflow</artifactId>
-  <version>4.5.4</version><!-- {x-version-update:google-cloud-dialogflow:current} -->
+  <version>4.5.5</version><!-- {x-version-update:google-cloud-dialogflow:current} -->
   <packaging>jar</packaging>
   <name>Google Cloud Dialog Flow API</name>
   <url>https://github.com/googleapis/java-dialogflow</url>
@@ -11,7 +11,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-dialogflow-parent</artifactId>
-    <version>4.5.4</version><!-- {x-version-update:google-cloud-dialogflow:current} -->
+    <version>4.5.5</version><!-- {x-version-update:google-cloud-dialogflow:current} -->
   </parent>
   <properties>
     <site.installationModule>google-cloud-dialogflow</site.installationModule>
diff --git a/grpc-google-cloud-dialogflow-v2/pom.xml b/grpc-google-cloud-dialogflow-v2/pom.xml
index cebfebd6a..f04091674 100644
--- a/grpc-google-cloud-dialogflow-v2/pom.xml
+++ b/grpc-google-cloud-dialogflow-v2/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-dialogflow-v2</artifactId>
-  <version>4.5.4</version><!-- {x-version-update:grpc-google-cloud-dialogflow-v2:current} -->
+  <version>4.5.5</version><!-- {x-version-update:grpc-google-cloud-dialogflow-v2:current} -->
   <name>grpc-google-cloud-dialogflow-v2</name>
   <description>GRPC library for grpc-google-cloud-dialogflow-v2</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-dialogflow-parent</artifactId>
-    <version>4.5.4</version><!-- {x-version-update:google-cloud-dialogflow:current} -->
+    <version>4.5.5</version><!-- {x-version-update:google-cloud-dialogflow:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/grpc-google-cloud-dialogflow-v2beta1/pom.xml b/grpc-google-cloud-dialogflow-v2beta1/pom.xml
index c30a3fc2f..74baa8ec4 100644
--- a/grpc-google-cloud-dialogflow-v2beta1/pom.xml
+++ b/grpc-google-cloud-dialogflow-v2beta1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-dialogflow-v2beta1</artifactId>
-  <version>0.103.4</version><!-- {x-version-update:grpc-google-cloud-dialogflow-v2beta1:current} -->
+  <version>0.103.5</version><!-- {x-version-update:grpc-google-cloud-dialogflow-v2beta1:current} -->
   <name>grpc-google-cloud-dialogflow-v2beta1</name>
   <description>GRPC library for grpc-google-cloud-dialogflow-v2beta1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-dialogflow-parent</artifactId>
-    <version>4.5.4</version><!-- {x-version-update:google-cloud-dialogflow:current} -->
+    <version>4.5.5</version><!-- {x-version-update:google-cloud-dialogflow:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/pom.xml b/pom.xml
index 0b7a5ca60..8b9f33ebd 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-dialogflow-parent</artifactId>
   <packaging>pom</packaging>
-  <version>4.5.4</version><!-- {x-version-update:google-cloud-dialogflow:current} -->
+  <version>4.5.5</version><!-- {x-version-update:google-cloud-dialogflow:current} -->
   <name>Google Cloud Dialog Flow API Parent</name>
   <url>https://github.com/googleapis/java-dialogflow</url>
   <description>
@@ -61,27 +61,27 @@
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-dialogflow-v2</artifactId>
-        <version>4.5.4</version><!-- {x-version-update:proto-google-cloud-dialogflow-v2:current} -->
+        <version>4.5.5</version><!-- {x-version-update:proto-google-cloud-dialogflow-v2:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-dialogflow-v2beta1</artifactId>
-        <version>0.103.4</version><!-- {x-version-update:proto-google-cloud-dialogflow-v2beta1:current} -->
+        <version>0.103.5</version><!-- {x-version-update:proto-google-cloud-dialogflow-v2beta1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-dialogflow-v2beta1</artifactId>
-        <version>0.103.4</version><!-- {x-version-update:grpc-google-cloud-dialogflow-v2beta1:current} -->
+        <version>0.103.5</version><!-- {x-version-update:grpc-google-cloud-dialogflow-v2beta1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-dialogflow-v2</artifactId>
-        <version>4.5.4</version><!-- {x-version-update:grpc-google-cloud-dialogflow-v2:current} -->
+        <version>4.5.5</version><!-- {x-version-update:grpc-google-cloud-dialogflow-v2:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-dialogflow</artifactId>
-        <version>4.5.4</version><!-- {x-version-update:google-cloud-dialogflow:current} -->
+        <version>4.5.5</version><!-- {x-version-update:google-cloud-dialogflow:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
@@ -131,7 +131,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-project-info-reports-plugin</artifactId>
-        <version>3.2.1</version>
+        <version>3.2.2</version>
         <reportSets>
           <reportSet>
             <reports>
diff --git a/proto-google-cloud-dialogflow-v2/pom.xml b/proto-google-cloud-dialogflow-v2/pom.xml
index ce425f3a5..cf7ba6921 100644
--- a/proto-google-cloud-dialogflow-v2/pom.xml
+++ b/proto-google-cloud-dialogflow-v2/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-dialogflow-v2</artifactId>
-  <version>4.5.4</version><!-- {x-version-update:proto-google-cloud-dialogflow-v2:current} -->
+  <version>4.5.5</version><!-- {x-version-update:proto-google-cloud-dialogflow-v2:current} -->
   <name>proto-google-cloud-dialogflow-v2</name>
   <description>PROTO library for proto-google-cloud-dialogflow-v2</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-dialogflow-parent</artifactId>
-    <version>4.5.4</version><!-- {x-version-update:google-cloud-dialogflow:current} -->
+    <version>4.5.5</version><!-- {x-version-update:google-cloud-dialogflow:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/proto-google-cloud-dialogflow-v2beta1/pom.xml b/proto-google-cloud-dialogflow-v2beta1/pom.xml
index 3261ed75e..200021393 100644
--- a/proto-google-cloud-dialogflow-v2beta1/pom.xml
+++ b/proto-google-cloud-dialogflow-v2beta1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-dialogflow-v2beta1</artifactId>
-  <version>0.103.4</version><!-- {x-version-update:proto-google-cloud-dialogflow-v2beta1:current} -->
+  <version>0.103.5</version><!-- {x-version-update:proto-google-cloud-dialogflow-v2beta1:current} -->
   <name>proto-google-cloud-dialogflow-v2beta1</name>
   <description>PROTO library for proto-google-cloud-dialogflow-v2beta1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-dialogflow-parent</artifactId>
-    <version>4.5.4</version><!-- {x-version-update:google-cloud-dialogflow:current} -->
+    <version>4.5.5</version><!-- {x-version-update:google-cloud-dialogflow:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/samples/install-without-bom/pom.xml b/samples/install-without-bom/pom.xml
index 128f1dc33..d76d6822f 100644
--- a/samples/install-without-bom/pom.xml
+++ b/samples/install-without-bom/pom.xml
@@ -36,7 +36,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-core</artifactId>
-      <version>2.5.4</version>
+      <version>2.5.5</version>
       <scope>test</scope>
       <classifier>tests</classifier>
     </dependency>
diff --git a/samples/snapshot/pom.xml b/samples/snapshot/pom.xml
index 623a5fac3..f5cc8a37c 100644
--- a/samples/snapshot/pom.xml
+++ b/samples/snapshot/pom.xml
@@ -34,7 +34,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-core</artifactId>
-      <version>2.5.4</version>
+      <version>2.5.5</version>
       <scope>test</scope>
       <classifier>tests</classifier>
     </dependency>
diff --git a/samples/snippets/pom.xml b/samples/snippets/pom.xml
index 02a976f30..16202c8a2 100644
--- a/samples/snippets/pom.xml
+++ b/samples/snippets/pom.xml
@@ -47,7 +47,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-core</artifactId>
-      <version>2.5.4</version>
+      <version>2.5.5</version>
       <scope>test</scope>
       <classifier>tests</classifier>
     </dependency>
diff --git a/versions.txt b/versions.txt
index c121cea73..c5b2b99aa 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,8 +1,8 @@
 # Format:
 # module:released-version:current-version
 
-google-cloud-dialogflow:4.5.4:4.5.4
-grpc-google-cloud-dialogflow-v2beta1:0.103.4:0.103.4
-grpc-google-cloud-dialogflow-v2:4.5.4:4.5.4
-proto-google-cloud-dialogflow-v2:4.5.4:4.5.4
-proto-google-cloud-dialogflow-v2beta1:0.103.4:0.103.4
+google-cloud-dialogflow:4.5.5:4.5.5
+grpc-google-cloud-dialogflow-v2beta1:0.103.5:0.103.5
+grpc-google-cloud-dialogflow-v2:4.5.5:4.5.5
+proto-google-cloud-dialogflow-v2:4.5.5:4.5.5
+proto-google-cloud-dialogflow-v2beta1:0.103.5:0.103.5