diff --git a/build.sbt b/build.sbt
index 525dd00c1..44670ebe5 100644
--- a/build.sbt
+++ b/build.sbt
@@ -8,7 +8,7 @@ val Versions = new {
   val catsRetry         = "3.1.3"
   val catsTime          = "0.5.1"
   val circe             = "0.14.9"
-  val crystal           = "0.39.2"
+  val crystal           = "0.39.3"
   val fs2Dom            = "0.3.0-M1"
   val kittens           = "3.3.0"
   val http4s            = "0.23.27"