diff --git a/nabo/nabo.h b/nabo/nabo.h
index addb4a9..9d6963b 100644
--- a/nabo/nabo.h
+++ b/nabo/nabo.h
@@ -205,6 +205,12 @@ libnabo differs from \ref ANN on the following points:
 namespace Nabo
 {
 	//! \defgroup public public interface
+	//@{
+
+	//! version of the Nabo library as string
+	#define NABO_VERSION "1.1.1"
+	//! version of the Nabo library as an int
+	#define NABO_VERSION_INT 10101
 
 	// TODO (c++14) Convert invalidIndex, invalidValue to constexpr templated variables.
 	template <typename IndexType>