diff --git a/CHANGELOG.md b/CHANGELOG.md
index afebaf8..3a0cc01 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -111,3 +111,4 @@ change.
 
 - Library updates
   - Update Akka to 2.5.12
+  - Update Gerweck Utils to 4.0.1
diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index 10a29b3..f0ea828 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -22,7 +22,7 @@ object Dependencies {
   final val scalaJava8Version  = "0.8.0"
   final val scalaParserVersion = "1.0.4"
   final val scalaXmlVersion    = "1.0.5"
-  final val gerweckUtilVersion = "3.1.0"
+  final val gerweckUtilVersion = "4.0.1"
   final val catsVersion        = "1.1.0"
   final val shapelessVersion   = "2.3.3"
   final val scallopVersion     = "1.0.1"