diff --git a/README.md b/README.md
index df1f69e..876f0f3 100644
--- a/README.md
+++ b/README.md
@@ -276,11 +276,12 @@ We need implicits to be able to convert between the two, but now changes to one
 
 ## Versions
 
-### Features for 2.1.0 (In-Progress)
+### Features for 2.1.0 (Released 2017.07.28)
 
-* [ ] Features for mapping from one Observable to another
+* [X] Features for mapping from one Observable to another
     * [X] map
     * [X] collect
+* [X] Cross-build with Scala 2.13.0
 
 ### Features for 2.0.0 (Released 2017.06.15)
 
diff --git a/build.sbt b/build.sbt
index 74a9c28..cf1c138 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,6 +1,6 @@
 name := "reactify"
 organization in ThisBuild := "com.outr"
-version in ThisBuild := "2.1.0-SNAPSHOT"
+version in ThisBuild := "2.1.0"
 scalaVersion in ThisBuild := "2.12.3"
 crossScalaVersions in ThisBuild := List("2.12.3", "2.11.11", "2.13.0-M1")