diff --git a/build.sbt b/build.sbt
index 247f932..726bde9 100644
--- a/build.sbt
+++ b/build.sbt
@@ -12,7 +12,7 @@ def DefaultScalaVersion: String = Scala213
 val catsCollectionsV = "0.9.10"
 val catsV            = "2.13.0"
 val disciplineMunitV = "2.0.0"
-val icu4jV           = "78.2"
+val icu4jV           = "78.3"
 val literallyV       = "1.2.0"
 val munitV           = "1.3.0"
 val munitScalacheckV = "1.3.0"