diff --git a/README.md b/README.md
index e8007bbcc..9ec147185 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,7 @@ Add the following dependency to your pom.xml:
         <dependency>
             <groupId>de.hs-heilbronn.mi</groupId>
             <artifactId>crawler4j-with-sleepycat</artifactId>
-            <version>4.8.1-SNAPSHOT</version>
+            <version>4.8.1</version>
             <type>pom</type>
         </dependency>    
 ```
@@ -38,7 +38,7 @@ Otherwise, you can use `HSQLDB` instead
         <dependency>
             <groupId>de.hs-heilbronn.mi</groupId>
             <artifactId>crawler4j-with-hsqldb</artifactId>
-            <version>4.8.1-SNAPSHOT</version>
+            <version>4.8.1</version>
             <type>pom</type>
         </dependency>    
 ```
@@ -49,7 +49,7 @@ or you use an external [crawler-commons/url-frontier](https://github.com/crawler
         <dependency>
             <groupId>de.hs-heilbronn.mi</groupId>
             <artifactId>crawler4j-with-urlfrontier</artifactId>
-            <version>4.8.1-SNAPSHOT</version>
+            <version>4.8.1</version>
             <type>pom</type>
         </dependency>    
 ```
diff --git a/crawler4j-boms/crawler4j-with-hsqldb/pom.xml b/crawler4j-boms/crawler4j-with-hsqldb/pom.xml
index 644e7502c..8d3115f0a 100644
--- a/crawler4j-boms/crawler4j-with-hsqldb/pom.xml
+++ b/crawler4j-boms/crawler4j-with-hsqldb/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>crawler4j-boms</artifactId>
         <groupId>de.hs-heilbronn.mi</groupId>
-        <version>4.8.1-SNAPSHOT</version>
+        <version>4.8.1</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/crawler4j-boms/crawler4j-with-sleepycat/pom.xml b/crawler4j-boms/crawler4j-with-sleepycat/pom.xml
index 3a35f90c8..1d7533b42 100644
--- a/crawler4j-boms/crawler4j-with-sleepycat/pom.xml
+++ b/crawler4j-boms/crawler4j-with-sleepycat/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>crawler4j-boms</artifactId>
         <groupId>de.hs-heilbronn.mi</groupId>
-        <version>4.8.1-SNAPSHOT</version>
+        <version>4.8.1</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <packaging>pom</packaging>
diff --git a/crawler4j-boms/crawler4j-with-urlfrontier/pom.xml b/crawler4j-boms/crawler4j-with-urlfrontier/pom.xml
index 345608f42..50cef2716 100644
--- a/crawler4j-boms/crawler4j-with-urlfrontier/pom.xml
+++ b/crawler4j-boms/crawler4j-with-urlfrontier/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>crawler4j-boms</artifactId>
         <groupId>de.hs-heilbronn.mi</groupId>
-        <version>4.8.1-SNAPSHOT</version>
+        <version>4.8.1</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <packaging>pom</packaging>
diff --git a/crawler4j-boms/pom.xml b/crawler4j-boms/pom.xml
index 1795bcf83..c9ecf05af 100644
--- a/crawler4j-boms/pom.xml
+++ b/crawler4j-boms/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>crawler4j-parent</artifactId>
         <groupId>de.hs-heilbronn.mi</groupId>
-        <version>4.8.1-SNAPSHOT</version>
+        <version>4.8.1</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/crawler4j-commons/pom.xml b/crawler4j-commons/pom.xml
index 2f0f7177d..878b79da2 100644
--- a/crawler4j-commons/pom.xml
+++ b/crawler4j-commons/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>crawler4j-parent</artifactId>
         <groupId>de.hs-heilbronn.mi</groupId>
-        <version>4.8.1-SNAPSHOT</version>
+        <version>4.8.1</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/crawler4j-core/pom.xml b/crawler4j-core/pom.xml
index 637ac2324..d5fb61052 100644
--- a/crawler4j-core/pom.xml
+++ b/crawler4j-core/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>crawler4j-parent</artifactId>
         <groupId>de.hs-heilbronn.mi</groupId>
-        <version>4.8.1-SNAPSHOT</version>
+        <version>4.8.1</version>
     </parent>
 
     <artifactId>crawler4j-core</artifactId>
diff --git a/crawler4j-examples/crawler4j-examples-base/pom.xml b/crawler4j-examples/crawler4j-examples-base/pom.xml
index 85d5b3f38..8290af882 100644
--- a/crawler4j-examples/crawler4j-examples-base/pom.xml
+++ b/crawler4j-examples/crawler4j-examples-base/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <artifactId>crawler4j-examples</artifactId>
         <groupId>de.hs-heilbronn.mi</groupId>
-        <version>4.8.1-SNAPSHOT</version>
+        <version>4.8.1</version>
     </parent>
     <artifactId>crawler4j-examples-base</artifactId>
     <name>${project.groupId}:${project.artifactId}</name>
diff --git a/crawler4j-examples/crawler4j-examples-postgres/pom.xml b/crawler4j-examples/crawler4j-examples-postgres/pom.xml
index f560e3223..5696b6e89 100644
--- a/crawler4j-examples/crawler4j-examples-postgres/pom.xml
+++ b/crawler4j-examples/crawler4j-examples-postgres/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <artifactId>crawler4j-examples</artifactId>
         <groupId>de.hs-heilbronn.mi</groupId>
-        <version>4.8.1-SNAPSHOT</version>
+        <version>4.8.1</version>
     </parent>
     <name>${project.groupId}:${project.artifactId}</name>
     <artifactId>crawler4j-examples-postgres</artifactId>
diff --git a/crawler4j-examples/pom.xml b/crawler4j-examples/pom.xml
index b4bbd7cd5..d7ee9667d 100644
--- a/crawler4j-examples/pom.xml
+++ b/crawler4j-examples/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <artifactId>crawler4j-parent</artifactId>
         <groupId>de.hs-heilbronn.mi</groupId>
-        <version>4.8.1-SNAPSHOT</version>
+        <version>4.8.1</version>
     </parent>
 
     <name>${project.groupId}:${project.artifactId}</name>
diff --git a/crawler4j-frontier/crawler4j-frontier-hsqldb/pom.xml b/crawler4j-frontier/crawler4j-frontier-hsqldb/pom.xml
index 6d48a1735..9fc5c2df2 100644
--- a/crawler4j-frontier/crawler4j-frontier-hsqldb/pom.xml
+++ b/crawler4j-frontier/crawler4j-frontier-hsqldb/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>crawler4j-frontier</artifactId>
         <groupId>de.hs-heilbronn.mi</groupId>
-        <version>4.8.1-SNAPSHOT</version>
+        <version>4.8.1</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/crawler4j-frontier/crawler4j-frontier-sleepycat/pom.xml b/crawler4j-frontier/crawler4j-frontier-sleepycat/pom.xml
index 24cbbd7c7..a806aaa4a 100644
--- a/crawler4j-frontier/crawler4j-frontier-sleepycat/pom.xml
+++ b/crawler4j-frontier/crawler4j-frontier-sleepycat/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>crawler4j-frontier</artifactId>
         <groupId>de.hs-heilbronn.mi</groupId>
-        <version>4.8.1-SNAPSHOT</version>
+        <version>4.8.1</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/crawler4j-frontier/crawler4j-frontier-urlfrontier/pom.xml b/crawler4j-frontier/crawler4j-frontier-urlfrontier/pom.xml
index 402cbeefd..57656f2ff 100644
--- a/crawler4j-frontier/crawler4j-frontier-urlfrontier/pom.xml
+++ b/crawler4j-frontier/crawler4j-frontier-urlfrontier/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>crawler4j-frontier</artifactId>
         <groupId>de.hs-heilbronn.mi</groupId>
-        <version>4.8.1-SNAPSHOT</version>
+        <version>4.8.1</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/crawler4j-frontier/pom.xml b/crawler4j-frontier/pom.xml
index cf4524627..b232ee8ca 100644
--- a/crawler4j-frontier/pom.xml
+++ b/crawler4j-frontier/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>crawler4j-parent</artifactId>
         <groupId>de.hs-heilbronn.mi</groupId>
-        <version>4.8.1-SNAPSHOT</version>
+        <version>4.8.1</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/pom.xml b/pom.xml
index b802cfc61..ae4c93cdd 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
     <groupId>de.hs-heilbronn.mi</groupId>
     <artifactId>crawler4j-parent</artifactId>
     <packaging>pom</packaging>
-    <version>4.8.1-SNAPSHOT</version>
+    <version>4.8.1</version>
     <name>${project.groupId}:${project.artifactId}</name>
 
     <description>Open Source Web Crawler for Java</description>