diff --git a/build.sbt b/build.sbt
index e6fa44f..f8a4323 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,4 +1,4 @@
-lazy val fs2Version = "3.8.0"
+lazy val fs2Version = "3.9.3"
 
 ThisBuild / organization := "com.dwolla"
 ThisBuild / homepage := Some(url("https://github.com/Dwolla/fs2-aws"))