diff --git a/README.md b/README.md
index 5c4b8f6ed2..a255285b79 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # Welcome to <img src="logo-full.png" height="35"/>
 
 ![Build](https://github.com/biojava/biojava/actions/workflows/master.yml/badge.svg)
-[![Version](http://img.shields.io/badge/version-7.2.5-blue.svg?style=flat)](https://github.com/biojava/biojava/releases/tag/biojava-7.2.5) [![License](http://img.shields.io/badge/license-LGPL_2.1-blue.svg?style=flat)](https://github.com/biojava/biojava/blob/master/LICENSE) [![Join the chat at https://gitter.im/biojava/biojava](https://badges.gitter.im/biojava/biojava.svg)](https://gitter.im/biojava/biojava?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+[![Version](http://img.shields.io/badge/version-7.3.0-blue.svg?style=flat)](https://github.com/biojava/biojava/releases/tag/biojava-7.3.0) [![License](http://img.shields.io/badge/license-LGPL_2.1-blue.svg?style=flat)](https://github.com/biojava/biojava/blob/master/LICENSE) [![Join the chat at https://gitter.im/biojava/biojava](https://badges.gitter.im/biojava/biojava.svg)](https://gitter.im/biojava/biojava?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
 
 BioJava is an open-source project dedicated to providing a Java framework for **processing biological data**. It provides analytical and statistical routines, parsers for common file formats, reference implementations of popular algorithms, and allows the manipulation of sequences and 3D structures. The goal of the biojava project is to facilitate rapid application development for bioinformatics.
@@ -29,7 +29,7 @@ If you are using Maven you can add the BioJava repository by adding the followin
       <dependency>
         <groupId>org.biojava</groupId>
         <artifactId>biojava-core</artifactId>
-        <version>7.2.5</version>
+        <version>7.3.0</version>
       </dependency>
       <!-- other biojava modules as needed -->
     </dependencies>
diff --git a/biojava-aa-prop/pom.xml b/biojava-aa-prop/pom.xml
index 30f762c48d..4eddedc8c4 100644
--- a/biojava-aa-prop/pom.xml
+++ b/biojava-aa-prop/pom.xml
@@ -2,7 +2,7 @@
 	<parent>
 		<artifactId>biojava</artifactId>
 		<groupId>org.biojava</groupId>
-		<version>7.3.0</version>
+		<version>7.3.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>biojava-aa-prop</artifactId>
@@ -70,12 +70,12 @@
 		<dependency>
 			<groupId>org.biojava</groupId>
 			<artifactId>biojava-core</artifactId>
-			<version>7.3.0</version>
+			<version>7.3.1-SNAPSHOT</version>
 		</dependency>
 		<dependency>
 			<groupId>org.biojava</groupId>
 			<artifactId>biojava-structure</artifactId>
-			<version>7.3.0</version>
+			<version>7.3.1-SNAPSHOT</version>
 		</dependency>
 
 		<!-- logging dependencies (managed by parent pom, don't set versions or scopes here) -->
diff --git a/biojava-alignment/pom.xml b/biojava-alignment/pom.xml
index 7a510016bf..f4e3609788 100644
--- a/biojava-alignment/pom.xml
+++ b/biojava-alignment/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<artifactId>biojava</artifactId>
 		<groupId>org.biojava</groupId>
-		<version>7.3.0</version>
+		<version>7.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>biojava-alignment</artifactId>
 	<name>biojava-alignment</name>
@@ -47,7 +47,7 @@
 		<dependency>
 			<groupId>org.biojava</groupId>
 			<artifactId>biojava-core</artifactId>
-			<version>7.3.0</version>
+			<version>7.3.1-SNAPSHOT</version>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
diff --git a/biojava-core/pom.xml b/biojava-core/pom.xml
index eca5e739de..7d9044ce10 100644
--- a/biojava-core/pom.xml
+++ b/biojava-core/pom.xml
@@ -3,7 +3,7 @@
 	<parent>
 		<artifactId>biojava</artifactId>
 		<groupId>org.biojava</groupId>
-		<version>7.3.0</version>
+		<version>7.3.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>biojava-core</artifactId>
diff --git a/biojava-genome/pom.xml b/biojava-genome/pom.xml
index 3e44ef1cea..2055afd7b9 100644
--- a/biojava-genome/pom.xml
+++ b/biojava-genome/pom.xml
@@ -3,7 +3,7 @@
 	<parent>
 		<artifactId>biojava</artifactId>
 		<groupId>org.biojava</groupId>
-		<version>7.3.0</version>
+		<version>7.3.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>biojava-genome</artifactId>
@@ -73,13 +73,13 @@
 		<dependency>
 			<groupId>org.biojava</groupId>
 			<artifactId>biojava-core</artifactId>
-			<version>7.3.0</version>
+			<version>7.3.1-SNAPSHOT</version>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.biojava</groupId>
 			<artifactId>biojava-alignment</artifactId>
-			<version>7.3.0</version>
+			<version>7.3.1-SNAPSHOT</version>
 			<scope>compile</scope>
 		</dependency>
 		<!-- logging dependencies (managed by parent pom, don't set versions or scopes here) -->
diff --git a/biojava-integrationtest/pom.xml b/biojava-integrationtest/pom.xml
index 8a3ad2f5a6..5403ca75a6 100644
--- a/biojava-integrationtest/pom.xml
+++ b/biojava-integrationtest/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <artifactId>biojava</artifactId>
     <groupId>org.biojava</groupId>
-    <version>7.3.0</version>
+    <version>7.3.1-SNAPSHOT</version>
   </parent>
   <artifactId>biojava-integrationtest</artifactId>
   <packaging>jar</packaging>
@@ -40,7 +40,7 @@
     <dependency>
     	<groupId>org.biojava</groupId>
     	<artifactId>biojava-structure</artifactId>
-    	<version>7.3.0</version>
+    	<version>7.3.1-SNAPSHOT</version>
     </dependency>
 		<!-- logging dependencies (managed by parent pom, don't set versions or scopes here) -->
 		<dependency>
diff --git a/biojava-modfinder/pom.xml b/biojava-modfinder/pom.xml
index 576abb791b..bdc703f410 100644
--- a/biojava-modfinder/pom.xml
+++ b/biojava-modfinder/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<artifactId>biojava</artifactId>
 		<groupId>org.biojava</groupId>
-		<version>7.3.0</version>
+		<version>7.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>biojava-modfinder</artifactId>
 	<name>biojava-modfinder</name>
@@ -31,7 +31,7 @@
 		<dependency>
 			<groupId>org.biojava</groupId>
 			<artifactId>biojava-structure</artifactId>
-			<version>7.3.0</version>
+			<version>7.3.1-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
diff --git a/biojava-ontology/pom.xml b/biojava-ontology/pom.xml
index d2ac0182bf..53ffbbec45 100644
--- a/biojava-ontology/pom.xml
+++ b/biojava-ontology/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.biojava</groupId>
     <artifactId>biojava</artifactId>
-    <version>7.3.0</version>
+    <version>7.3.1-SNAPSHOT</version>
   </parent>
 
   <artifactId>biojava-ontology</artifactId>
diff --git a/biojava-protein-comparison-tool/pom.xml b/biojava-protein-comparison-tool/pom.xml
index c89118a69f..de5373d3a4 100644
--- a/biojava-protein-comparison-tool/pom.xml
+++ b/biojava-protein-comparison-tool/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<artifactId>biojava</artifactId>
 		<groupId>org.biojava</groupId>
-		<version>7.3.0</version>
+		<version>7.3.1-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>biojava-protein-comparison-tool</artifactId>
@@ -36,23 +36,23 @@
 		<dependency>
 			<groupId>org.biojava</groupId>
 			<artifactId>biojava-alignment</artifactId>
-			<version>7.3.0</version>
+			<version>7.3.1-SNAPSHOT</version>
 
 		</dependency>
 		<dependency>
 			<groupId>org.biojava</groupId>
 			<artifactId>biojava-core</artifactId>
-			<version>7.3.0</version>
+			<version>7.3.1-SNAPSHOT</version>
 		</dependency>
 		<dependency>
 			<groupId>org.biojava</groupId>
 			<artifactId>biojava-structure</artifactId>
-			<version>7.3.0</version>
+			<version>7.3.1-SNAPSHOT</version>
 		</dependency>
 		<dependency>
 			<groupId>org.biojava</groupId>
 			<artifactId>biojava-structure-gui</artifactId>
-			<version>7.3.0</version>
+			<version>7.3.1-SNAPSHOT</version>
 		</dependency>
 		<dependency>
 			<groupId>net.sourceforge.jmol</groupId>
diff --git a/biojava-protein-disorder/pom.xml b/biojava-protein-disorder/pom.xml
index 57a0b4091d..12e60c9b9b 100644
--- a/biojava-protein-disorder/pom.xml
+++ b/biojava-protein-disorder/pom.xml
@@ -3,7 +3,7 @@
 	<parent>
 		<artifactId>biojava</artifactId>
 		<groupId>org.biojava</groupId>
-		<version>7.3.0</version>
+		<version>7.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>biojava-protein-disorder</artifactId>
 	<packaging>jar</packaging>
@@ -63,7 +63,7 @@
 		<dependency>
 			<groupId>org.biojava</groupId>
 			<artifactId>biojava-core</artifactId>
-			<version>7.3.0</version>
+			<version>7.3.1-SNAPSHOT</version>
 		</dependency>
 		<!-- logging dependencies (managed by parent pom, don't set versions or
 			scopes here) -->
diff --git a/biojava-structure-gui/pom.xml b/biojava-structure-gui/pom.xml
index a5eb908ee2..0f101b8c21 100644
--- a/biojava-structure-gui/pom.xml
+++ b/biojava-structure-gui/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <artifactId>biojava</artifactId>
         <groupId>org.biojava</groupId>
-		<version>7.3.0</version>
+		<version>7.3.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <artifactId>biojava-structure-gui</artifactId>
@@ -27,13 +27,13 @@
         <dependency>
             <groupId>org.biojava</groupId>
             <artifactId>biojava-structure</artifactId>
-			<version>7.3.0</version>
+			<version>7.3.1-SNAPSHOT</version>
             <scope>compile</scope>
         </dependency>
         <dependency>
             <groupId>org.biojava</groupId>
             <artifactId>biojava-core</artifactId>
-			<version>7.3.0</version>
+			<version>7.3.1-SNAPSHOT</version>
             <scope>compile</scope>
         </dependency>
 
diff --git a/biojava-structure/pom.xml b/biojava-structure/pom.xml
index 265fe3ee7b..41c6b28f4c 100644
--- a/biojava-structure/pom.xml
+++ b/biojava-structure/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<artifactId>biojava</artifactId>
 		<groupId>org.biojava</groupId>
-		<version>7.3.0</version>
+		<version>7.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>biojava-structure</artifactId>
 	<name>biojava-structure</name>
@@ -51,13 +51,13 @@
 		<dependency>
 			<groupId>org.biojava</groupId>
 			<artifactId>biojava-alignment</artifactId>
-			<version>7.3.0</version>
+			<version>7.3.1-SNAPSHOT</version>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.biojava</groupId>
 			<artifactId>biojava-core</artifactId>
-			<version>7.3.0</version>
+			<version>7.3.1-SNAPSHOT</version>
 			<scope>compile</scope>
 		</dependency>
 
diff --git a/biojava-survival/pom.xml b/biojava-survival/pom.xml
index 057f32b872..69780e7f5b 100644
--- a/biojava-survival/pom.xml
+++ b/biojava-survival/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <groupId>org.biojava</groupId>
         <artifactId>biojava</artifactId>
-        <version>7.3.0</version>
+        <version>7.3.1-SNAPSHOT</version>
     </parent>
 
     <artifactId>biojava-survival</artifactId>
diff --git a/biojava-ws/pom.xml b/biojava-ws/pom.xml
index 7a8c951591..380a470b4f 100644
--- a/biojava-ws/pom.xml
+++ b/biojava-ws/pom.xml
@@ -3,7 +3,7 @@
 	<parent>
 		<artifactId>biojava</artifactId>
 		<groupId>org.biojava</groupId>
-		<version>7.3.0</version>
+		<version>7.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>biojava-ws</artifactId>
 	<name>biojava-ws</name>
@@ -19,7 +19,7 @@
 		<dependency>
 			<groupId>org.biojava</groupId>
 			<artifactId>biojava-core</artifactId>
-			<version>7.3.0</version>
+			<version>7.3.1-SNAPSHOT</version>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
diff --git a/pom.xml b/pom.xml
index 13108624c3..3b35e33ea2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -12,7 +12,7 @@
 	<groupId>org.biojava</groupId>
 	<artifactId>biojava</artifactId>
 	<packaging>pom</packaging>
-	<version>7.3.0</version>
+	<version>7.3.1-SNAPSHOT</version>
 	<name>biojava</name>
 	<description>BioJava is an open-source project dedicated to providing a Java framework for processing biological
         data. It provides analytical and statistical routines, parsers for common file formats and allows the
@@ -51,7 +51,7 @@
 		<developerConnection>scm:git:git@github.com:biojava/biojava.git</developerConnection>
 		<url>https://github.com/biojava/biojava</url>
 
-		<tag>biojava-7.3.0</tag>
+		<tag>HEAD</tag>
 	</scm>
 
 	<!-- This section required for release at Maven Central. For a full list