diff --git a/pom.xml b/pom.xml
index 65c47be..fc4e38c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
   <groupId>org.nanopub</groupId>
   <artifactId>nanopub</artifactId>
   <packaging>jar</packaging>
-  <version>1.33-SNAPSHOT</version>
+  <version>1.33</version>
   <name>nanopub</name>
   <description>Java library for nanopublications based on Sesame</description>
   <url>https://github.com/Nanopublication/nanopub-java</url>
@@ -106,7 +106,7 @@
     <url>https://github.com/Nanopublication/nanopub-java</url>
     <connection>scm:git:git@github.com:Nanopublication/nanopub-java.git</connection>
     <developerConnection>scm:git:git@github.com:Nanopublication/nanopub-java.git</developerConnection>
-    <tag>HEAD</tag>
+    <tag>nanopub-1.33</tag>
   </scm>
   <developers>
     <developer>