diff --git a/pom.xml b/pom.xml
index 5574abb6..33f47549 100644
--- a/pom.xml
+++ b/pom.xml
@@ -143,6 +143,10 @@
google-http-client
${google.http.version}
+
+ com.google.code.findbugs
+ jsr305
+
com.google.guava
diff --git a/src/main/java/com/google/jenkins/plugins/computeengine/ComputeEngineCloud.java b/src/main/java/com/google/jenkins/plugins/computeengine/ComputeEngineCloud.java
index e3addf1a..7611640b 100644
--- a/src/main/java/com/google/jenkins/plugins/computeengine/ComputeEngineCloud.java
+++ b/src/main/java/com/google/jenkins/plugins/computeengine/ComputeEngineCloud.java
@@ -62,7 +62,6 @@
import java.util.logging.Logger;
import java.util.logging.SimpleFormatter;
import java.util.stream.Collectors;
-import javax.annotation.Nonnull;
import javax.servlet.ServletException;
import jenkins.model.Jenkins;
import lombok.Getter;
@@ -446,7 +445,7 @@ static void checkPermissions(@NonNull AccessControlled context, Permission... pe
@Extension
public static class GoogleCloudDescriptor extends Descriptor {
- @Nonnull
+ @NonNull
@Override
public String getDisplayName() {
return Messages.ComputeEngineCloud_DisplayName();
diff --git a/src/main/java/com/google/jenkins/plugins/computeengine/ComputeEngineInstance.java b/src/main/java/com/google/jenkins/plugins/computeengine/ComputeEngineInstance.java
index 5f8baff9..ec0f92a2 100644
--- a/src/main/java/com/google/jenkins/plugins/computeengine/ComputeEngineInstance.java
+++ b/src/main/java/com/google/jenkins/plugins/computeengine/ComputeEngineInstance.java
@@ -19,6 +19,7 @@
import com.google.cloud.graphite.platforms.plugin.client.ComputeClient.OperationException;
import com.google.common.base.Strings;
import com.google.jenkins.plugins.computeengine.ssh.GoogleKeyCredential;
+import edu.umd.cs.findbugs.annotations.Nullable;
import hudson.Extension;
import hudson.model.Computer;
import hudson.model.Descriptor;
@@ -32,7 +33,6 @@
import java.util.Optional;
import java.util.logging.Level;
import java.util.logging.Logger;
-import javax.annotation.Nullable;
import jenkins.model.Jenkins;
import lombok.Builder;
import lombok.Getter;