diff --git a/ulc/Interpreter.scala b/ulc/Interpreter.scala
index c4fa217..5392a93 100644
--- a/ulc/Interpreter.scala
+++ b/ulc/Interpreter.scala
@@ -1,5 +1,5 @@
 //> using scala "3.3.1"
-//> using lib "org.typelevel::cats-core::2.10.0"
+//> using lib "org.typelevel::cats-core::2.13.0"
 //> using lib "org.typelevel::cats-parse::0.3.10"
 
 package ulc
diff --git a/ulc/Interpreter.test.scala b/ulc/Interpreter.test.scala
index 097d1b4..53f1b9f 100644
--- a/ulc/Interpreter.test.scala
+++ b/ulc/Interpreter.test.scala
@@ -1,5 +1,5 @@
 //> using scala "3.3.1"
-//> using lib "org.typelevel::cats-core:2.10.0"
+//> using lib "org.typelevel::cats-core:2.13.0"
 //> using lib "org.scalameta::munit::1.0.0"
 
 package ulc
diff --git a/ulc/Parser.scala b/ulc/Parser.scala
index f6d16f3..3b69625 100644
--- a/ulc/Parser.scala
+++ b/ulc/Parser.scala
@@ -1,5 +1,5 @@
 //> using scala "3.3.1"
-//> using lib "org.typelevel::cats-core::2.10.0"
+//> using lib "org.typelevel::cats-core::2.13.0"
 
 package parser