diff --git a/checker/build.gradle b/checker/build.gradle
index 6111febd4c74..09e7ba0230a6 100644
--- a/checker/build.gradle
+++ b/checker/build.gradle
@@ -52,7 +52,7 @@ dependencies {
     // File Utilities takes priority over this version, in the fat jar
     // file. :-( So update it and re-build it locally when updating this.
     implementation 'org.plumelib:reflection-util:1.0.4'
-    implementation 'org.plumelib:plume-util:1.5.8'
+    implementation 'org.plumelib:plume-util:1.6.0'
 
     // Dependencies added to "shadow" appear as dependencies in Maven Central.
     shadow project(':checker-qual')
diff --git a/dataflow/build.gradle b/dataflow/build.gradle
index cab8e3d52ef7..a08a4e39e221 100644
--- a/dataflow/build.gradle
+++ b/dataflow/build.gradle
@@ -7,7 +7,7 @@ dependencies {
     api project(':checker-qual')
 
     // Node implements org.plumelib.util.UniqueId, so this dependency must be "api".
-    api 'org.plumelib:plume-util:1.5.8'
+    api 'org.plumelib:plume-util:1.6.0'
 
     // External dependencies:
     // If you add an external dependency, you must shadow its packages both in the dataflow-shaded
diff --git a/framework-test/build.gradle b/framework-test/build.gradle
index 883a65b8ef29..481655845364 100644
--- a/framework-test/build.gradle
+++ b/framework-test/build.gradle
@@ -14,7 +14,7 @@ dependencies {
     implementation project(':javacutil')
     implementation project(':checker-qual')
 
-    implementation 'org.plumelib:plume-util:1.5.8'
+    implementation 'org.plumelib:plume-util:1.6.0'
 
     if (Jvm.current().toolsJar) {
         tagletImplementation files(Jvm.current().toolsJar)
diff --git a/framework/build.gradle b/framework/build.gradle
index e6931c609b1b..72a521ffca71 100644
--- a/framework/build.gradle
+++ b/framework/build.gradle
@@ -67,7 +67,7 @@ dependencies {
     // External dependencies:
     // If you add an external dependency, you must shadow its packages.
     // See the comment in ../build.gradle in the shadowJar block.
-    implementation 'org.plumelib:plume-util:1.5.8'
+    implementation 'org.plumelib:plume-util:1.6.0'
     implementation 'org.plumelib:reflection-util:1.0.4'
     implementation 'io.github.classgraph:classgraph:4.8.141'
 
diff --git a/javacutil/build.gradle b/javacutil/build.gradle
index 47fcb15e29c2..84ff9ad51b46 100644
--- a/javacutil/build.gradle
+++ b/javacutil/build.gradle
@@ -11,7 +11,7 @@ dependencies {
 
     // This is used by org.checkerframework.javacutil.TypesUtils.isImmutableTypeInJdk.
     // https://mvnrepository.com/artifact/org.plumelib/plume-util
-    implementation 'org.plumelib:plume-util:1.5.8'
+    implementation 'org.plumelib:plume-util:1.6.0'
 
     // External dependencies:
     // If you add an external dependency, you must shadow its packages both in checker.jar and