diff --git a/annotation-file-utilities/build.gradle b/annotation-file-utilities/build.gradle
index 3d9cbf743..465fb10be 100644
--- a/annotation-file-utilities/build.gradle
+++ b/annotation-file-utilities/build.gradle
@@ -55,7 +55,7 @@ dependencies {
         implementation 'org.plumelib:options:2.0.0'
     }
     implementation 'org.plumelib:options:1.0.5'
-    implementation 'org.plumelib:plume-util:1.5.9'
+    implementation 'org.plumelib:plume-util:1.6.0'
     implementation 'org.plumelib:reflection-util:1.0.5'
     // Annotations in checker-qual.jar are used, but no checkers are (currently) run on the code.
     compileOnly 'org.checkerframework:checker-qual:3.26.0'