diff --git a/NEWS b/NEWS
index 21659d46..d41ceaad 100644
--- a/NEWS
+++ b/NEWS
@@ -2,6 +2,10 @@
 User visible changes for UPX
 ==================================================================
 
+Changes in 4.0.0 (XX XXX 2020):
+  * Switch to semantic versioning
+  * bug fixes - see https://github.com/upx/upx/milestone/6
+
 Changes in 3.96 (23 Jan 2020):
   * bug fixes - see https://github.com/upx/upx/milestone/5
 
diff --git a/src/version.h b/src/version.h
index b0302622..aecf8e72 100644
--- a/src/version.h
+++ b/src/version.h
@@ -1,8 +1,8 @@
-#define UPX_VERSION_HEX         0x036000        /* 03.96.00 */
-#define UPX_VERSION_STRING      "3.96"
-#define UPX_VERSION_STRING4     "3.96"
-#define UPX_VERSION_DATE        "Jan 23rd 2020"
-#define UPX_VERSION_DATE_ISO    "2020-01-23"
+#define UPX_VERSION_HEX         0x040000        /* 04.00.00 */
+#define UPX_VERSION_STRING      "4.00"
+#define UPX_VERSION_STRING4     "4.00"
+#define UPX_VERSION_DATE        "Jan 24th 2020"
+#define UPX_VERSION_DATE_ISO    "2020-01-24"
 #define UPX_VERSION_YEAR        "2020"
 
 /* vim:set ts=4 sw=4 et: */