diff --git a/samples/install-without-bom/pom.xml b/samples/install-without-bom/pom.xml
index 7f980ad6..1e13e908 100644
--- a/samples/install-without-bom/pom.xml
+++ b/samples/install-without-bom/pom.xml
@@ -48,7 +48,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-core</artifactId>
-      <version>2.3.3</version>
+      <version>2.3.4</version>
       <classifier>tests</classifier>
     </dependency>
   </dependencies>
diff --git a/samples/snapshot/pom.xml b/samples/snapshot/pom.xml
index 1e76a799..d4a4cc11 100644
--- a/samples/snapshot/pom.xml
+++ b/samples/snapshot/pom.xml
@@ -46,7 +46,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-core</artifactId>
-      <version>2.3.3</version>
+      <version>2.3.4</version>
       <classifier>tests</classifier>
     </dependency>
   </dependencies>
diff --git a/samples/snippets/pom.xml b/samples/snippets/pom.xml
index 0f1b1843..41709858 100644
--- a/samples/snippets/pom.xml
+++ b/samples/snippets/pom.xml
@@ -59,7 +59,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-core</artifactId>
-      <version>2.3.3</version>
+      <version>2.3.4</version>
       <classifier>tests</classifier>
     </dependency>
   </dependencies>