diff --git a/libAACdec/include/aacdecoder_lib.h b/libAACdec/include/aacdecoder_lib.h
index 3a9b910..5f0dd02 100644
--- a/libAACdec/include/aacdecoder_lib.h
+++ b/libAACdec/include/aacdecoder_lib.h
@@ -457,6 +457,11 @@ Where N equals to CStreamInfo::frameSize .
 #include "FDK_audio.h"
 
 #include "genericStds.h"
+
+#define AACDECODER_LIB_VL0 3
+#define AACDECODER_LIB_VL1 0
+#define AACDECODER_LIB_VL2 0
+
 /**
  * \brief  AAC decoder error codes.
  */
diff --git a/libAACenc/include/aacenc_lib.h b/libAACenc/include/aacenc_lib.h
index 2e47571..fa41ee6 100644
--- a/libAACenc/include/aacenc_lib.h
+++ b/libAACenc/include/aacenc_lib.h
@@ -1025,6 +1025,10 @@ internally.
 #include "machine_type.h"
 #include "FDK_audio.h"
 
+#define AACENCODER_LIB_VL0 4
+#define AACENCODER_LIB_VL1 0
+#define AACENCODER_LIB_VL2 0
+
 /**
  *  AAC encoder error codes.
  */