--- a/pom.xml
+++ b/pom.xml
@@ -128,7 +128,6 @@
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>
@@ -370,13 +369,24 @@
                             -Xep:LongDoubleConversion:OFF
                             -Xep:StringSplitter:OFF
                             -XepExcludedPaths:.*/generated/.*
+                            ${error-prone.configuration-args}
                         </arg>
                     </compilerArgs>
                     <annotationProcessorPaths>
                         <path>
                             <groupId>com.google.errorprone</groupId>
                             <artifactId>error_prone_core</artifactId>
-                            <version>2.36.0</version>
+                            <version>${error-prone.version}</version>
+                        </path>
+                        <path>
+                            <groupId>tech.picnic.error-prone-support</groupId>
+                            <artifactId>error-prone-contrib</artifactId>
+                            <version>${error-prone-support.version}</version>
+                        </path>
+                        <path>
+                            <groupId>tech.picnic.error-prone-support</groupId>
+                            <artifactId>refaster-runner</artifactId>
+                            <version>${error-prone-support.version}</version>
                         </path>
                         <!-- Other annotation processors go here.
 
