diff --git a/notes/4.1.0.markdown b/notes/4.1.0.markdown
new file mode 100644
index 0000000000..1eadd97e75
--- /dev/null
+++ b/notes/4.1.0.markdown
@@ -0,0 +1,9 @@
+Upgrade version
+
+## Upgrades
+
+ * **mockito** upgraded to Mockito `2.18.2`, this is mostly to avoid a concurrency bug introduced by Mockito (#641).
+ * **html** the default options for pandoc are now compatible with pandoc `2.1.3` for markdown generation
+ 
+ Otherwise please refer to the `4.0.4` notes for the latest changes.
+
diff --git a/project/depends.scala b/project/depends.scala
index 47bf296b3b..16c9cc00cd 100644
--- a/project/depends.scala
+++ b/project/depends.scala
@@ -37,7 +37,7 @@ object depends {
   def kindp(scalaVersion: String) =
     "org.spire-math" % "kind-projector" % "0.8.2" cross CrossVersion.binary
 
-  lazy val mockito       = Seq("org.mockito"  % "mockito-core"  % "2.16.0")
+  lazy val mockito       = Seq("org.mockito"  % "mockito-core"  % "2.18.0")
   lazy val junit         = Seq("junit"        % "junit"         % "4.12")
   lazy val hamcrest      = Seq("org.hamcrest" % "hamcrest-core" % "1.3")
 
@@ -69,7 +69,8 @@ object depends {
       Seq()
 
   lazy val resolvers =
-    Seq(sbt.Keys.resolvers ++= Seq(Resolver.sonatypeRepo("releases")))
+    Seq(sbt.Keys.resolvers ++= Seq(
+      Resolver.sonatypeRepo("releases")))
 
   def scalaMinorVersionAtLeast(scalaVersion: String, n: Int): Boolean =
     CrossVersion.partialVersion(scalaVersion) match {
diff --git a/version.sbt b/version.sbt
index 1aff6743cc..da6fe0f418 100644
--- a/version.sbt
+++ b/version.sbt
@@ -1 +1 @@
-version in ThisBuild := "4.0.4"
+version in ThisBuild := "4.1.0"