diff --git a/README.md b/README.md
index a61588a..b86367e 100644
--- a/README.md
+++ b/README.md
@@ -2,8 +2,8 @@
 [![image](https://readthedocs.org/projects/rings/badge/?version=latest)](https://rings.readthedocs.io)
 [![image](http://www.javadoc.io/badge/cc.redberry/rings.svg)](http://www.javadoc.io/doc/cc.redberry/rings)
 [![image](http://www.javadoc.io/badge/cc.redberry/rings.scaladsl_2.12.svg?label=scaladoc)](http://www.javadoc.io/doc/cc.redberry/rings.scaladsl_2.12)
-[![image](https://img.shields.io/maven-central/v/cc.redberry/rings/2.svg?style=flat)](https://search.maven.org/#artifactdetails%7Ccc.redberry%7Crings%7C2.3.2%7Cjar)
-[![image](https://img.shields.io/maven-central/v/cc.redberry/rings.scaladsl_2.12/2.svg?style=flat)](https://search.maven.org/#artifactdetails%7Ccc.redberry%7Crings.scaladsl_2.12%7C2.3.2%7Cjar)
+[![image](https://img.shields.io/maven-central/v5cc.redberry/rings/2.svg?style=flat)](https://search.maven.org/#artifactdetails%7Ccc.redberry%7Crings%7C2.5.2%7Cjar)
+[![image](https://img.shields.io/maven-central/v/cc.redberry/rings.scaladsl_2.12/2.svg?style=flat)](https://search.maven.org/#artifactdetails%7Ccc.redberry%7Crings.scaladsl_2.12%7C2.5.2%7Cjar)
 [![image](https://img.shields.io/badge/License-Apache%202.0-blue.svg?style=flat)](https://opensource.org/licenses/Apache-2.0)
 
 Rings: efficient Java/Scala library for polynomial rings
@@ -46,7 +46,7 @@ Now run Rings<i>.repl</i>:
 ``` scala
 $ rings.repl
 Loading...
-Rings 2.5.1: efficient Java/Scala library for polynomial rings
+Rings 2.5.2: efficient Java/Scala library for polynomial rings
 
 @ implicit val ring = MultivariateRing(Z, Array("x", "y", "z"))
 ring: MultivariateRing[IntZ] = MultivariateRing(Z, Array("x", "y", "z"), LEX)
@@ -75,7 +75,7 @@ $ rings.repl myRingsScript.sc
 Rings is currently available for Java and Scala. To get started with Scala SBT, simply add the following dependence to your `build.sbt` file:
 
 ``` scala
-libraryDependencies += "cc.redberry" %% "rings.scaladsl" % "2.5.1"
+libraryDependencies += "cc.redberry" %% "rings.scaladsl" % "2.5.2"
 ```
 
 For using Rings solely in Java there is Maven artifact:
@@ -84,7 +84,7 @@ For using Rings solely in Java there is Maven artifact:
 <dependency>
     <groupId>cc.redberry</groupId>
     <artifactId>rings</artifactId>
-    <version>2.5.1</version>
+    <version>2.5.2</version>
 </dependency>
 ```
 
diff --git a/doc/conf.py b/doc/conf.py
index 6c0e77e..513421d 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -79,9 +79,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = '2.5.1'
+version = '2.5.2'
 # The full version, including alpha/beta/rc tags.
-release = '2.5.1'
+release = '2.5.2'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/doc/quickstart.rst b/doc/quickstart.rst
index 3157591..b6fc42c 100644
--- a/doc/quickstart.rst
+++ b/doc/quickstart.rst
@@ -32,8 +32,8 @@ or just by typing the following commands at the prompt:
 
 .. code-block:: bash
 
-	$ sudo curl -L -o /usr/local/bin/amm https://git.io/v5Tct && sudo chmod +x /usr/local/bin/amm
-	$ sudo curl -L -o /usr/local/bin/rings.repl https://git.io/vd7EY && chmod +x /usr/local/bin/rings.repl
+	$ sudo sh -c '(echo "#!/usr/bin/env sh" && curl -L https://github.com/lihaoyi/Ammonite/releases/download/1.1.2/2.12-1.1.2) > /usr/local/bin/amm && chmod +x /usr/local/bin/amm'
+	$ sudo sh -c 'curl -L -o /usr/local/bin/rings.repl https://git.io/vd7EY && chmod +x /usr/local/bin/rings.repl'
 
 Now run |Rings|\ *.repl*:
 
@@ -41,7 +41,7 @@ Now run |Rings|\ *.repl*:
 
 	$ rings.repl
 	Loading...
-	Rings 2.4: efficient Java/Scala library for polynomial rings
+	Rings 2.5.2: efficient Java/Scala library for polynomial rings
 
 	@ implicit val ring = MultivariateRing(Z, Array("x", "y", "z"))
 	ring: MultivariateRing[IntZ] = MultivariateRing(Z, Array("x", "y", "z"), LEX)
@@ -64,7 +64,7 @@ Java/Scala library
 
 .. code-block:: scala
 
-	libraryDependencies += "cc.redberry" %% "rings.scaladsl" % "2.4"
+	libraryDependencies += "cc.redberry" %% "rings.scaladsl" % "2.5.2"
 
 For using |Rings| solely in Java there is Maven artifact:
 
@@ -73,7 +73,7 @@ For using |Rings| solely in Java there is Maven artifact:
 	<dependency>
 	    <groupId>cc.redberry</groupId>
 	    <artifactId>rings</artifactId>
-	    <version>2.4</version>
+	    <version>2.5.2</version>
 	</dependency>
 
 
diff --git a/rings.repl/rings.repl b/rings.repl/rings.repl
index 5ec0651..af4b15b 100755
--- a/rings.repl/rings.repl
+++ b/rings.repl/rings.repl
@@ -51,7 +51,7 @@ case $os in
     ;;
 esac
 
-ringsVersion=2.5.1
+ringsVersion=2.5.2
 ammArgs=()
 javaArgs=()
 
diff --git a/rings.scaladsl/build.sbt b/rings.scaladsl/build.sbt
index 809aef0..9197fd2 100644
--- a/rings.scaladsl/build.sbt
+++ b/rings.scaladsl/build.sbt
@@ -4,7 +4,7 @@ organization := "cc.redberry"
 
 name := "rings.scaladsl"
 
-version := "2.5.2-SNAPSHOT"
+version := "2.5.2"
 
 scalaVersion := "2.12.3"
 
@@ -15,7 +15,7 @@ moduleName := name.value
 resolvers += Resolver.mavenLocal
 
 libraryDependencies ++= Seq(
-  "cc.redberry" % "rings" % "2.5.2-SNAPSHOT",
+  "cc.redberry" % "rings" % "2.5.2",
   "junit" % "junit" % "4.12" % Test,
   "com.novocode" % "junit-interface" % "0.11" % Test exclude("junit", "junit-dep")
 )
diff --git a/rings/pom.xml b/rings/pom.xml
index 2f80884..7408c78 100644
--- a/rings/pom.xml
+++ b/rings/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>cc.redberry</groupId>
     <artifactId>rings</artifactId>
-    <version>2.5.2-SNAPSHOT</version>
+    <version>2.5.2</version>
     <packaging>jar</packaging>
     <name>rings</name>
     <url>https://github.com/PoslavskySV/rings/</url>