diff --git a/README.md b/README.md
index a06ce60b..669311b2 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ resolvers += "Sonatype Releases" at "https://oss.sonatype.org/content/repositori
 
 You can use Scrypto in your sbt project by simply adding the following dependency to your build file:
 ```scala
-libraryDependencies += "org.scorexfoundation" %% "scrypto" % "2.1.1"
+libraryDependencies += "org.scorexfoundation" %% "scrypto" % "2.1.2"
 ```
 
 ### Hash functions
diff --git a/build.sbt b/build.sbt
index 377c42d1..f5e0dff4 100644
--- a/build.sbt
+++ b/build.sbt
@@ -4,7 +4,7 @@ name := "scrypto"
 
 lazy val commonSettings = Seq(
   organization := "org.scorexfoundation",
-  version := "2.1.1",
+  version := "2.1.2",
   scalaVersion := "2.12.5",
   licenses := Seq("CC0" -> url("https://creativecommons.org/publicdomain/zero/1.0/legalcode")),
   homepage := Some(url("https://github.com/input-output-hk/scrypto")),
diff --git a/release-notes.md b/release-notes.md
index 3c057130..bc08b95c 100644
--- a/release-notes.md
+++ b/release-notes.md
@@ -1,3 +1,11 @@
+**2.1.2**
+---------
+
+* Base58: empty string allowed as parameter
+* Reworked Base16 implementation has much better performance
+* Minor changes in MerkleTree implementation 
+ 
+
 **2.1.1**
 ---------
 
diff --git a/src/test/scala/scorex/crypto/authds/avltree/batch/BatchingPlayground.scala b/src/test/scala/scorex/crypto/authds/avltree/batch/BatchingPlayground.scala
index 4aadb0a8..ee97bf64 100644
--- a/src/test/scala/scorex/crypto/authds/avltree/batch/BatchingPlayground.scala
+++ b/src/test/scala/scorex/crypto/authds/avltree/batch/BatchingPlayground.scala
@@ -36,7 +36,9 @@ object BatchingPlayground extends App with BatchTestingHelpers with Matchers {
   //lookupBenchmark()
   //  testReadme
   //removedNodesBenchmark
-  removedNodesBenchmark()
+  //removedNodesBenchmark()
+
+  testReadme
 
   def removedNodesBenchmark(startTreeSize: Int = 10000,
                             toRemoveSize: Int = 2000,