diff --git a/src/version.h b/src/version.h
index e8354381..d7f04f9a 100644
--- a/src/version.h
+++ b/src/version.h
@@ -1,6 +1,6 @@
 #define UPX_VERSION_HEX         0x029000        /* 02.90.00 */
-#define UPX_VERSION_STRING      "2.90"
+#define UPX_VERSION_STRING      "2.90beta1"
 #define UPX_VERSION_STRING4     "2.90"
-#define UPX_VERSION_DATE        "Jun 09th 2006"
-#define UPX_VERSION_DATE_ISO    "2006-06-09"
+#define UPX_VERSION_DATE        "Jun 22th 2006"
+#define UPX_VERSION_DATE_ISO    "2006-06-22"
 #define UPX_VERSION_YEAR        "2006"