diff --git a/build.gradle b/build.gradle
index 3c14ed046..61249836e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -23,7 +23,7 @@ ext {
 
 group = 'com.github.ie3-institute'
 description = 'PowerSystemDataModel'
-version = '1.0'
+version = '1.1-SNAPSHOT'
 sourceCompatibility = javaVersion
 targetCompatibility = javaVersion