diff --git a/build.sbt b/build.sbt
index 596229b..d95f804 100644
--- a/build.sbt
+++ b/build.sbt
@@ -24,7 +24,7 @@ def crossPlugin(x: sbt.librarymanagement.ModuleID) = compilerPlugin(x.cross(Cros
 
 val compilerPlugins = List(
   crossPlugin("org.typelevel" % "kind-projector" % "0.13.2"),
-  crossPlugin("org.polyvariant" % "better-tostring" % "0.3.13"),
+  crossPlugin("org.polyvariant" % "better-tostring" % "0.3.15"),
 )
 
 ThisBuild / versionScheme := Some("early-semver")