diff --git a/hmmlib/hmmlib.h b/hmmlib/hmmlib.h
index 980d092..13c2d81 100644
--- a/hmmlib/hmmlib.h
+++ b/hmmlib/hmmlib.h
@@ -95,4 +95,10 @@ HMML_Output hmml_parse_file (FILE* file);
 void        hmml_dump       (HMML_Output* output);
 void        hmml_free       (HMML_Output* output);
 
+// Version
+
+extern const struct HMML_Version {
+	int Major, Minor, Patch;
+} hmml_version;
+
 #endif
diff --git a/hmmlib/hmmlib.l b/hmmlib/hmmlib.l
index e1f0b34..c22f7fc 100644
--- a/hmmlib/hmmlib.l
+++ b/hmmlib/hmmlib.l
@@ -5,6 +5,8 @@
 #include "stb_sb.h"
 #include "hmmlib.h"
 
+	const struct HMML_Version hmml_version = { 0, 1, 0 };
+
 	typedef struct {
 		int    line;
 		HMML_Annotation* annos;