diff --git a/pom.xml b/pom.xml
index 038008f..c766cda 100644
--- a/pom.xml
+++ b/pom.xml
@@ -43,7 +43,7 @@
     <guava.version>25.1-jre</guava.version>
     <okhttp.version>3.10.0</okhttp.version>
     <moshi.version>1.6.0</moshi.version>
-    <retrofit.version>2.4.0</retrofit.version>
+    <retrofit.version>2.8.1</retrofit.version>
     <mockito.version>2.8.9</mockito.version>
     <commonlang.version>3.6</commonlang.version>
     <failsafe.version>1.0.4</failsafe.version>
@@ -226,7 +226,7 @@
               <shadedArtifactAttached>true</shadedArtifactAttached>
               <shadedClassifierName>uber</shadedClassifierName>
               <transformers>
-                <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer" />
+                <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
                 <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                   <manifestEntries>
                     <Main-Class>${main-class}</Main-Class>