diff --git a/gcm-sender-async/pom.xml b/gcm-sender-async/pom.xml
index 00285aab4..51d17e7f7 100644
--- a/gcm-sender-async/pom.xml
+++ b/gcm-sender-async/pom.xml
@@ -26,6 +26,19 @@
             <artifactId>mockwebserver</artifactId>
             <version>2.1.0</version>
             <scope>test</scope>
+            <exclusions>
+                <exclusion>
+                    <groupId>org.bouncycastle</groupId>
+                    <artifactId>bcprov-jdk15on</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+
+        <dependency>
+            <groupId>org.bouncycastle</groupId>
+            <artifactId>bcprov-jdk16</artifactId>
+            <version>1.46</version>
+            <scope>test</scope>
         </dependency>
     </dependencies>