diff --git a/build.sbt b/build.sbt
index 14f098e..38d6fe5 100644
--- a/build.sbt
+++ b/build.sbt
@@ -19,7 +19,7 @@ lazy val root = (project in file(".")).enablePlugins(ScriptedPlugin).settings(
   scalafixDependencies += "com.github.liancheng" %% "organize-imports" % "0.6.0",
   libraryDependencies ++= Seq(
     "org.typelevel"    %% "cats-effect"         % "3.5.1",
-    "co.fs2"           %% "fs2-core"            % "3.8.0",
+    "co.fs2"           %% "fs2-core"            % "3.9.0",
     "com.monovore"     %% "decline-effect"      % "2.4.1",
     "is.cir"           %% "ciris"               % "3.2.0",
     ("org.typelevel"    % "kind-projector"      % "0.13.2").cross(CrossVersion.full),
diff --git a/src/main/g8/project/Dependencies.scala b/src/main/g8/project/Dependencies.scala
index 9fb406b..3e922d1 100644
--- a/src/main/g8/project/Dependencies.scala
+++ b/src/main/g8/project/Dependencies.scala
@@ -7,7 +7,7 @@ object Dependencies {
     "org.typelevel"                %% "cats-effect"    % "3.5.1",
     "com.monovore"                 %% "decline-effect" % "2.4.1",
     "is.cir"                       %% "ciris"          % "3.2.0",
-    $if(add_fs2.truthy) $ "co.fs2" %% "fs2-core"       % "3.8.0" $endif$
+    $if(add_fs2.truthy) $ "co.fs2" %% "fs2-core"       % "3.9.0" $endif$
   )
 
   val testDependencies: Seq[ModuleID] = Seq("org.typelevel" %% "munit-cats-effect-3" % "1.0.7").map(_ % Test)