diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
index 2b88ebb7..f8c34d0e 100644
--- a/.git-blame-ignore-revs
+++ b/.git-blame-ignore-revs
@@ -1,2 +1,5 @@
 # Scala Steward: Reformat with scalafmt 3.5.8
 faf8cec6e85c9007a5325e84fe908dc4d566f404
+
+# Scala Steward: Reformat with scalafmt 3.8.3
+d649a560719be04432c49cf04974f2994698ba09
diff --git a/.scalafmt.conf b/.scalafmt.conf
index 224548b4..849c7577 100644
--- a/.scalafmt.conf
+++ b/.scalafmt.conf
@@ -1,4 +1,4 @@
-version = "3.8.2"
+version = "3.8.3"
 
 style = default
 
diff --git a/core/shared/src/main/scala/scodec/bits/ByteVector.scala b/core/shared/src/main/scala/scodec/bits/ByteVector.scala
index df8d139e..ef5d4710 100644
--- a/core/shared/src/main/scala/scodec/bits/ByteVector.scala
+++ b/core/shared/src/main/scala/scodec/bits/ByteVector.scala
@@ -1165,7 +1165,7 @@ sealed abstract class ByteVector
   final def decodeAsciiLenient: String =
     decodeStringLenient()(Charset.forName("US-ASCII"))
 
-  final def not: ByteVector = mapS(new F1B { def apply(b: Byte) = (~b).toByte })
+  final def not: ByteVector = mapS(new F1B { def apply(b: Byte) = ~b.toByte })
 
   final def or(other: ByteVector): ByteVector =
     zipWithS(other)(new F2B { def apply(b: Byte, b2: Byte) = (b | b2).toByte })