diff --git a/pom.xml b/pom.xml
index 9b0dc37..78cf347 100644
--- a/pom.xml
+++ b/pom.xml
@@ -10,7 +10,7 @@
   <groupId>com.github.jnr</groupId>
   <artifactId>jnr-posix</artifactId>
   <packaging>jar</packaging>
-  <version>3.1.20</version>
+  <version>3.1.21-SNAPSHOT</version>
   <name>jnr-posix</name>
   <description>
     Common cross-project/cross-platform POSIX APIs