diff --git a/source/core/version.h b/source/core/version.h
index 155753257a..983f52a86c 100644
--- a/source/core/version.h
+++ b/source/core/version.h
@@ -41,11 +41,11 @@ const char *GetVersionString();
 
 /** Lots of different version numbers **/
 
-#define VERSIONSTR "1.9.0"
+#define VERSIONSTR "1.9.1"
 
 // The version as seen in the Windows resource
-#define RC_FILEVERSION 1,9,0,0
-#define RC_PRODUCTVERSION 1,9,0,0
+#define RC_FILEVERSION 1,9,1,0
+#define RC_PRODUCTVERSION 1,9,1,0
 #define RC_PRODUCTVERSION2 VERSIONSTR
 // These are for content versioning.
 #define VER_MAJOR 4
@@ -54,7 +54,7 @@ const char *GetVersionString();
 
 #define ENG_MAJOR 1
 #define ENG_MINOR 9
-#define ENG_REVISION 0
+#define ENG_REVISION 1
 
 // More stuff that needs to be different for derivatives.
 #define GAMENAME "Raze"