diff --git a/build.gradle b/build.gradle
index 6329d60..9dcee21 100644
--- a/build.gradle
+++ b/build.gradle
@@ -12,7 +12,7 @@ plugins {
 }
 
 group = 'org.fulib'
-version = 'git describe --tags'.execute().text[1..-2] // strip v and \n
+version = 'git describe --tags'.execute([], rootDir).text[1..-2] // strip v and \n
 description = '''fulibTools is a library for testing that complements the fulib (https://github.com/fujaba/fulib) code generator.
 It provides features like class and object diagrams as well as a mechanism for automatically updating code snippets in documentation.'''