diff --git a/google-cloud-nio/pom.xml b/google-cloud-nio/pom.xml
index aaa52ebc..47cfe7fe 100644
--- a/google-cloud-nio/pom.xml
+++ b/google-cloud-nio/pom.xml
@@ -91,7 +91,6 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-core</artifactId>
-      <version>2.1.3</version>
       <scope>test</scope>
       <classifier>tests</classifier>
     </dependency>