diff --git a/CMakeLists.txt b/CMakeLists.txt
index e9db61a..965f86b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,7 +3,7 @@ project(qtkeychain)
 
 ###
 
-set(QTKEYCHAIN_VERSION 0)
+set(QTKEYCHAIN_VERSION 0.1.0)
 set(QTKEYCHAIN_SOVERSION 0)
 
 ###
diff --git a/keychain.h b/keychain.h
index dd56d4f..950d5ce 100644
--- a/keychain.h
+++ b/keychain.h
@@ -16,6 +16,8 @@
 
 class QSettings;
 
+#define QTKEYCHAIN_VERSION 0x000100
+
 namespace QKeychain {
 
 /**