diff --git a/README.md b/README.md
index a5f6b15e9..b398de14e 100644
--- a/README.md
+++ b/README.md
@@ -50,7 +50,7 @@ To use the ELK OWL API library, include the following maven dependency to your p
 <dependency>
   <groupId>io.github.liveontologies</groupId>
   <artifactId>elk-owlapi</artifactId>
-  <version>${releasedVersion.version}</version>
+  <version>0.6.0</version>
 </dependency>
 ```
 
diff --git a/elk-bom/pom.xml b/elk-bom/pom.xml
index b058922f1..f98cd8f2c 100644
--- a/elk-bom/pom.xml
+++ b/elk-bom/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>io.github.liveontologies</groupId>
 		<artifactId>elk-parent</artifactId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-bom</artifactId>
diff --git a/elk-cli/pom.xml b/elk-cli/pom.xml
index 6e23ecea8..c3e6896a6 100644
--- a/elk-cli/pom.xml
+++ b/elk-cli/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<artifactId>elk-parent</artifactId>
 		<groupId>io.github.liveontologies</groupId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/elk-distribution-parent/elk-distribution-cli/pom.xml b/elk-distribution-parent/elk-distribution-cli/pom.xml
index 883030c54..6df280f51 100644
--- a/elk-distribution-parent/elk-distribution-cli/pom.xml
+++ b/elk-distribution-parent/elk-distribution-cli/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>io.github.liveontologies</groupId>
 		<artifactId>elk-distribution-parent</artifactId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-distribution-cli</artifactId>
diff --git a/elk-distribution-parent/elk-distribution-owlapi/pom.xml b/elk-distribution-parent/elk-distribution-owlapi/pom.xml
index 89d72c9ce..9a8763afe 100644
--- a/elk-distribution-parent/elk-distribution-owlapi/pom.xml
+++ b/elk-distribution-parent/elk-distribution-owlapi/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>io.github.liveontologies</groupId>
 		<artifactId>elk-distribution-parent</artifactId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-distribution-owlapi</artifactId>
diff --git a/elk-distribution-parent/elk-distribution-protege/p5.update.properties b/elk-distribution-parent/elk-distribution-protege/p5.update.properties
index fd92420a6..29a62c1f5 100644
--- a/elk-distribution-parent/elk-distribution-protege/p5.update.properties
+++ b/elk-distribution-parent/elk-distribution-protege/p5.update.properties
@@ -1,6 +1,6 @@
 id=org.semanticweb.elk
-version=0.6.0.SNAPSHOT
-download=https://repo1.maven.org/maven2/io/github/liveontologies/elk-distribution-protege/0.6.0-SNAPSHOT/elk-distribution-protege-0.6.0-SNAPSHOT.zip
+version=0.6.0
+download=https://repo1.maven.org/maven2/io/github/liveontologies/elk-distribution-protege/0.6.0/elk-distribution-protege-0.6.0.zip
 name=ELK Reasoner: A Java-based ontology reasoner for the OWL 2 EL profile.
 readme=https://raw.githubusercontent.com/liveontologies/elk-reasoner/release/elk-distribution-parent/elk-distribution-protege/p5.version-info.txt
 license=https://www.apache.org/licenses/LICENSE-2.0.txt
diff --git a/elk-distribution-parent/elk-distribution-protege/pom.xml b/elk-distribution-parent/elk-distribution-protege/pom.xml
index 73de38918..11411dbb8 100644
--- a/elk-distribution-parent/elk-distribution-protege/pom.xml
+++ b/elk-distribution-parent/elk-distribution-protege/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>io.github.liveontologies</groupId>
 		<artifactId>elk-distribution-parent</artifactId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-distribution-protege</artifactId>
diff --git a/elk-distribution-parent/elk-distribution-resources/pom.xml b/elk-distribution-parent/elk-distribution-resources/pom.xml
index 56714434b..072d9c97b 100644
--- a/elk-distribution-parent/elk-distribution-resources/pom.xml
+++ b/elk-distribution-parent/elk-distribution-resources/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>io.github.liveontologies</groupId>
 		<artifactId>elk-distribution-parent</artifactId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-distribution-resources</artifactId>
diff --git a/elk-distribution-parent/pom.xml b/elk-distribution-parent/pom.xml
index c4c9535f5..06ffd5e81 100644
--- a/elk-distribution-parent/pom.xml
+++ b/elk-distribution-parent/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>io.github.liveontologies</groupId>
 		<artifactId>elk-parent</artifactId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-distribution-parent</artifactId>
diff --git a/elk-ore-parent/elk-ore-standalone/pom.xml b/elk-ore-parent/elk-ore-standalone/pom.xml
index 4c8ee200c..da5d35d1e 100644
--- a/elk-ore-parent/elk-ore-standalone/pom.xml
+++ b/elk-ore-parent/elk-ore-standalone/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<artifactId>elk-ore-parent</artifactId>
 		<groupId>io.github.liveontologies</groupId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-ore-standalone</artifactId>
diff --git a/elk-ore-parent/elk-ore/pom.xml b/elk-ore-parent/elk-ore/pom.xml
index 249fef73a..00a763b21 100644
--- a/elk-ore-parent/elk-ore/pom.xml
+++ b/elk-ore-parent/elk-ore/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<artifactId>elk-ore-parent</artifactId>
 		<groupId>io.github.liveontologies</groupId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-ore</artifactId>
diff --git a/elk-ore-parent/pom.xml b/elk-ore-parent/pom.xml
index 20c0931eb..1ff00e0d1 100644
--- a/elk-ore-parent/pom.xml
+++ b/elk-ore-parent/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<artifactId>elk-parent</artifactId>
 		<groupId>io.github.liveontologies</groupId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-ore-parent</artifactId>
diff --git a/elk-owl-parent/elk-owl-implementation/pom.xml b/elk-owl-parent/elk-owl-implementation/pom.xml
index 9b394272c..f50ec957f 100644
--- a/elk-owl-parent/elk-owl-implementation/pom.xml
+++ b/elk-owl-parent/elk-owl-implementation/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<artifactId>elk-owl-parent</artifactId>
 		<groupId>io.github.liveontologies</groupId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-owl-implementation</artifactId>
diff --git a/elk-owl-parent/elk-owl-implementation/src/main/java/org/semanticweb/elk/owl/visitors/DummyElkAxiomVisitor.java b/elk-owl-parent/elk-owl-implementation/src/main/java/org/semanticweb/elk/owl/visitors/DummyElkAxiomVisitor.java
index 1c433ea7a..f6342090b 100644
--- a/elk-owl-parent/elk-owl-implementation/src/main/java/org/semanticweb/elk/owl/visitors/DummyElkAxiomVisitor.java
+++ b/elk-owl-parent/elk-owl-implementation/src/main/java/org/semanticweb/elk/owl/visitors/DummyElkAxiomVisitor.java
@@ -85,6 +85,10 @@ protected O defaultVisit(ElkAxiom axiom) {
 	
 	/**
 	 * Invoked to visit every logical axiom
+	 * 
+	 * @param axiom
+	 *            the logical {@link ElkAxiom} to visit
+	 * @return the visitor output
 	 */
 	protected O defaultLogicalVisit(ElkAxiom axiom) {
 		return defaultVisit(axiom);
@@ -92,6 +96,10 @@ protected O defaultLogicalVisit(ElkAxiom axiom) {
 
 	/**
 	 * Invoked to visit every non-logical (annotation) axiom
+	 *
+	 *  @param axiom
+	 *            the non-logical {@link ElkAxiom} to visit
+	 * @return the visitor output
 	 */
 	protected O defaultNonLogicalVisit(ElkAxiom axiom) {
 		return defaultVisit(axiom);
diff --git a/elk-owl-parent/elk-owl-model/pom.xml b/elk-owl-parent/elk-owl-model/pom.xml
index 3143a3d4c..ed1ef8fde 100644
--- a/elk-owl-parent/elk-owl-model/pom.xml
+++ b/elk-owl-parent/elk-owl-model/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<artifactId>elk-owl-parent</artifactId>
 		<groupId>io.github.liveontologies</groupId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-owl-model</artifactId>
diff --git a/elk-owl-parent/elk-owl-parsing-javacc/pom.xml b/elk-owl-parent/elk-owl-parsing-javacc/pom.xml
index 0c9b00d88..25c94b8f3 100644
--- a/elk-owl-parent/elk-owl-parsing-javacc/pom.xml
+++ b/elk-owl-parent/elk-owl-parsing-javacc/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<artifactId>elk-owl-parent</artifactId>
 		<groupId>io.github.liveontologies</groupId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/elk-owl-parent/pom.xml b/elk-owl-parent/pom.xml
index 958b3306f..3f99855fa 100644
--- a/elk-owl-parent/pom.xml
+++ b/elk-owl-parent/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<artifactId>elk-parent</artifactId>
 		<groupId>io.github.liveontologies</groupId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-owl-parent</artifactId>
diff --git a/elk-owlapi/pom.xml b/elk-owlapi/pom.xml
index 07bea3f58..7575d0249 100644
--- a/elk-owlapi/pom.xml
+++ b/elk-owlapi/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>io.github.liveontologies</groupId>
 		<artifactId>elk-parent</artifactId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-owlapi</artifactId>
diff --git a/elk-proofs/pom.xml b/elk-proofs/pom.xml
index de24d3c3f..81ede0cb1 100644
--- a/elk-proofs/pom.xml
+++ b/elk-proofs/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<artifactId>elk-parent</artifactId>
 		<groupId>io.github.liveontologies</groupId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/elk-protege/pom.xml b/elk-protege/pom.xml
index 89b76a8e9..a877e169d 100644
--- a/elk-protege/pom.xml
+++ b/elk-protege/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<artifactId>elk-parent</artifactId>
 		<groupId>io.github.liveontologies</groupId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-protege</artifactId>
diff --git a/elk-reasoner/pom.xml b/elk-reasoner/pom.xml
index e4ccd13f2..d921f1535 100644
--- a/elk-reasoner/pom.xml
+++ b/elk-reasoner/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>io.github.liveontologies</groupId>
 		<artifactId>elk-parent</artifactId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-reasoner</artifactId>
diff --git a/elk-util-parent/elk-util-collections/pom.xml b/elk-util-parent/elk-util-collections/pom.xml
index b6f88a6ce..67269ba85 100644
--- a/elk-util-parent/elk-util-collections/pom.xml
+++ b/elk-util-parent/elk-util-collections/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<artifactId>elk-util-parent</artifactId>
 		<groupId>io.github.liveontologies</groupId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-util-collections</artifactId>
diff --git a/elk-util-parent/elk-util-common/pom.xml b/elk-util-parent/elk-util-common/pom.xml
index 108a3d502..e06032025 100644
--- a/elk-util-parent/elk-util-common/pom.xml
+++ b/elk-util-parent/elk-util-common/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>io.github.liveontologies</groupId>
 		<artifactId>elk-util-parent</artifactId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-util-common</artifactId>
diff --git a/elk-util-parent/elk-util-concurrent/pom.xml b/elk-util-parent/elk-util-concurrent/pom.xml
index f99721896..ad9e2c38a 100644
--- a/elk-util-parent/elk-util-concurrent/pom.xml
+++ b/elk-util-parent/elk-util-concurrent/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<artifactId>elk-util-parent</artifactId>
 		<groupId>io.github.liveontologies</groupId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-util-concurrent</artifactId>
diff --git a/elk-util-parent/elk-util-hashing/pom.xml b/elk-util-parent/elk-util-hashing/pom.xml
index b53a7a73a..064fd2de1 100644
--- a/elk-util-parent/elk-util-hashing/pom.xml
+++ b/elk-util-parent/elk-util-hashing/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<artifactId>elk-util-parent</artifactId>
 		<groupId>io.github.liveontologies</groupId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-util-hashing</artifactId>
diff --git a/elk-util-parent/elk-util-io/pom.xml b/elk-util-parent/elk-util-io/pom.xml
index 965a8cccd..71d08ee90 100644
--- a/elk-util-parent/elk-util-io/pom.xml
+++ b/elk-util-parent/elk-util-io/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>io.github.liveontologies</groupId>
 		<artifactId>elk-util-parent</artifactId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-util-io</artifactId>
diff --git a/elk-util-parent/elk-util-logging/pom.xml b/elk-util-parent/elk-util-logging/pom.xml
index 8a0195c42..336eba783 100644
--- a/elk-util-parent/elk-util-logging/pom.xml
+++ b/elk-util-parent/elk-util-logging/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<artifactId>elk-util-parent</artifactId>
 		<groupId>io.github.liveontologies</groupId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-util-logging</artifactId>
diff --git a/elk-util-parent/elk-util-testing/pom.xml b/elk-util-parent/elk-util-testing/pom.xml
index ca3136a91..8f93a7196 100644
--- a/elk-util-parent/elk-util-testing/pom.xml
+++ b/elk-util-parent/elk-util-testing/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>io.github.liveontologies</groupId>
 		<artifactId>elk-util-parent</artifactId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-util-testing</artifactId>
diff --git a/elk-util-parent/pom.xml b/elk-util-parent/pom.xml
index de88bafbd..829600416 100644
--- a/elk-util-parent/pom.xml
+++ b/elk-util-parent/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<artifactId>elk-parent</artifactId>
 		<groupId>io.github.liveontologies</groupId>
-		<version>0.6.0-SNAPSHOT</version>
+		<version>0.6.0</version>
 	</parent>
 
 	<artifactId>elk-util-parent</artifactId>
diff --git a/pom.xml b/pom.xml
index 6d21b350e..ea0fdb373 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>io.github.liveontologies</groupId>
 	<artifactId>elk-parent</artifactId>
-	<version>0.6.0-SNAPSHOT</version>
+	<version>0.6.0</version>
 	<packaging>pom</packaging>
 
 	<name>ELK Reasoner</name>