diff --git a/build.sbt b/build.sbt
index 85381b95c..000acaf8d 100644
--- a/build.sbt
+++ b/build.sbt
@@ -165,7 +165,7 @@ lazy val unit = project
       )
     ),
     libraryDependencies ++= List(
-      "co.fs2" %% "fs2-core" % "1.1.0-M2",
+      "co.fs2" %% "fs2-core" % "2.1.0",
       "org.scalacheck" %% "scalacheck" % "1.14.2" % Test,
       "org.scalatest" %% "scalatest" % "3.0.8" % Test,
       "org.scalameta" %% "testkit" % V.scalameta % Test