diff --git a/build.sc b/build.sc
index 5c46497..acbbe6d 100644
--- a/build.sc
+++ b/build.sc
@@ -7,7 +7,7 @@ import scalafmt._
 import mill.scalajslib._
 import webpack.{WebpackModule, NpmDependency}
 
-val catsEffectDep = ivy"org.typelevel::cats-effect::2.3.1"
+val catsEffectDep = ivy"org.typelevel::cats-effect::2.3.3"
 
 val monocleDeps = Agg(
   "monocle-core",