diff --git a/hooks-its/pom.xml b/hooks-its/pom.xml
index 19dd5d3..3d0a3e8 100644
--- a/hooks-its/pom.xml
+++ b/hooks-its/pom.xml
@@ -37,11 +37,6 @@
       <version>${project.version}</version>
     </dependency>
     <dependency>
-      <groupId>com.google.gerrit</groupId>
-      <artifactId>gerrit-pgm</artifactId>
-      <version>${project.version}</version>
-    </dependency>
-    <dependency>
       <groupId>org.apache.velocity</groupId>
       <artifactId>velocity</artifactId>
       <version>${velocityVersion}</version>
diff --git a/hooks-its/src/main/java/com/googlesource/gerrit/plugins/hooks/workflow/ActionRequest.java b/hooks-its/src/main/java/com/googlesource/gerrit/plugins/hooks/workflow/ActionRequest.java
index c829569..bd81cb1 100644
--- a/hooks-its/src/main/java/com/googlesource/gerrit/plugins/hooks/workflow/ActionRequest.java
+++ b/hooks-its/src/main/java/com/googlesource/gerrit/plugins/hooks/workflow/ActionRequest.java
@@ -16,10 +16,9 @@
 
 import java.util.Arrays;
 
-import javax.annotation.Nullable;
-
 import com.google.inject.Inject;
 import com.google.inject.assistedinject.Assisted;
+import com.google.gerrit.common.Nullable;
 
 /**
  * An action to take for an {@code ChangeEvent}.
diff --git a/hooks-its/src/main/java/com/googlesource/gerrit/plugins/hooks/workflow/Condition.java b/hooks-its/src/main/java/com/googlesource/gerrit/plugins/hooks/workflow/Condition.java
index 61aa365..5fc79a8 100644
--- a/hooks-its/src/main/java/com/googlesource/gerrit/plugins/hooks/workflow/Condition.java
+++ b/hooks-its/src/main/java/com/googlesource/gerrit/plugins/hooks/workflow/Condition.java
@@ -18,10 +18,9 @@
 import java.util.List;
 import java.util.Set;
 
-import javax.annotation.Nullable;
-
 import com.google.common.collect.Lists;
 import com.google.common.collect.Sets;
+import com.google.gerrit.common.Nullable;
 import com.google.inject.Inject;
 import com.google.inject.assistedinject.Assisted;
 
diff --git a/hooks-its/src/main/java/com/googlesource/gerrit/plugins/hooks/workflow/Property.java b/hooks-its/src/main/java/com/googlesource/gerrit/plugins/hooks/workflow/Property.java
index e8cc634..8b582d6 100644
--- a/hooks-its/src/main/java/com/googlesource/gerrit/plugins/hooks/workflow/Property.java
+++ b/hooks-its/src/main/java/com/googlesource/gerrit/plugins/hooks/workflow/Property.java
@@ -14,10 +14,9 @@
 
 package com.googlesource.gerrit.plugins.hooks.workflow;
 
-import javax.annotation.Nullable;
-
 import com.google.inject.Inject;
 import com.google.inject.assistedinject.Assisted;
+import com.google.gerrit.common.Nullable;
 
 /**
  * A property to match against {@code Condition}s.