diff --git a/pom.xml b/pom.xml
index d3e4764..5fd9b17 100644
--- a/pom.xml
+++ b/pom.xml
@@ -68,7 +68,7 @@
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>32.1.2-jre</version>
+            <version>33.7.1-jre</version>
             <scope>compile</scope>
         </dependency>
         <dependency>
diff --git a/src/main/java/io/ipinfo/api/IPinfo.java b/src/main/java/io/ipinfo/api/IPinfo.java
index d87ba69..d02a836 100644
--- a/src/main/java/io/ipinfo/api/IPinfo.java
+++ b/src/main/java/io/ipinfo/api/IPinfo.java
@@ -26,7 +26,6 @@
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.function.BiConsumer;
-import javax.annotation.ParametersAreNonnullByDefault;
 import okhttp3.*;
 
 public class IPinfo {
@@ -306,13 +305,11 @@ private ConcurrentHashMap<String, Object> getBatchGeneric(
             chunkClient.newCall(req).enqueue(
                 new Callback() {
                     @Override
-                    @ParametersAreNonnullByDefault
                     public void onFailure(Call call, IOException e) {
                         latch.countDown();
                     }
 
                     @Override
-                    @ParametersAreNonnullByDefault
                     public void onResponse(Call call, Response response)
                         throws IOException {
                         // the body is closed before the latch counts down,
diff --git a/src/main/java/io/ipinfo/api/IPinfoLite.java b/src/main/java/io/ipinfo/api/IPinfoLite.java
index 15bca04..bc40e8d 100644
--- a/src/main/java/io/ipinfo/api/IPinfoLite.java
+++ b/src/main/java/io/ipinfo/api/IPinfoLite.java
@@ -17,7 +17,6 @@
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 import java.util.function.BiConsumer;
-import javax.annotation.ParametersAreNonnullByDefault;
 import okhttp3.*;
 
 public class IPinfoLite {