diff --git a/annotation-file-utilities/build.gradle b/annotation-file-utilities/build.gradle
index 0e512a3bf..80e142ebb 100644
--- a/annotation-file-utilities/build.gradle
+++ b/annotation-file-utilities/build.gradle
@@ -54,7 +54,7 @@ dependencies {
     } else {
         implementation 'org.plumelib:options:2.0.2'
     }
-    implementation 'org.plumelib:plume-util:1.6.0'
+    implementation 'org.plumelib:plume-util:1.6.5'
     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 'io.github.eisop:checker-qual:3.27.0-eisop1'