diff --git a/DummyLoader/DummyLoader.idl b/DummyLoader/DummyLoader.idl
index 4546899..ef31ef0 100644
--- a/DummyLoader/DummyLoader.idl
+++ b/DummyLoader/DummyLoader.idl
@@ -4,7 +4,7 @@ import "IImage3d.idl";
 
 
 [
-    version(1.2),
+    version(2.0),
     uuid(ED4540BD-07B5-44B0-BCDE-3E2C1D99183B),
     helpstring("DummyLoader module")
 ]
@@ -13,7 +13,7 @@ library DummyLoader
     importlib("stdole2.tlb");
 
     [
-        version(1.2),
+        version(2.0),
         uuid(50BE330D-F729-4D8F-A1E4-C939E0598EDF),
         helpstring("3D image source")
     ]
@@ -23,7 +23,7 @@ library DummyLoader
     };
 
     [
-        version(1.2),
+        version(2.0),
         uuid(1326A2C6-7753-4584-B866-CDF3C6E240F1),
         helpstring("3D image file loader")
     ]
diff --git a/Image3dAPI/IImage3d.idl b/Image3dAPI/IImage3d.idl
index 6bc27d5..80611de 100644
--- a/Image3dAPI/IImage3d.idl
+++ b/Image3dAPI/IImage3d.idl
@@ -17,8 +17,8 @@ typedef [
   v1_enum, // 32bit enum size
   helpstring("Image3dAPI version.")]
 enum Image3dAPIVersion {
-    IMAGE3DAPI_VERSION_MAJOR = 1,
-    IMAGE3DAPI_VERSION_MINOR = 2,
+    IMAGE3DAPI_VERSION_MAJOR = 2,
+    IMAGE3DAPI_VERSION_MINOR = 0,
 } Image3dAPIVersion;