diff --git a/source/texk/web2c/harftexdir/NEWS b/source/texk/web2c/harftexdir/NEWS
index 31c7eeadf..96157994f 100644
--- a/source/texk/web2c/harftexdir/NEWS
+++ b/source/texk/web2c/harftexdir/NEWS
@@ -1,3 +1,18 @@
+==============================================================
+HarfTeX 0.4.0 2019-07-18
+==============================================================
+
+- Fix abug in reading CFF table in soe fonts causing the engine to abort.
+- Update luaharfbuzz to fix a logic error when populating Lua dictionaries from
+  C arrays (#11).
+- Remove the newly introduced get_char_tounicode callback, its functionality can
+  be implemented on top if existing callbacks.
+- Do not require setting font index for TTC fonts, for compatibility with
+  LuaTeX, though setting the index is still recommended.
+- Fix handling fonts with sbix table (like Apple Color Emoji).
+
+
+
 ==============================================================
 HarfTeX 0.3.1 2019-07-18
 ==============================================================
diff --git a/source/texk/web2c/harftexdir/luatex.c b/source/texk/web2c/harftexdir/luatex.c
index 3996b3569..e40f30b5e 100644
--- a/source/texk/web2c/harftexdir/luatex.c
+++ b/source/texk/web2c/harftexdir/luatex.c
@@ -37,9 +37,9 @@ int luatex_revision = '1';
 const char *luatex_version_string = "1.10.1";
 const char *engine_name = my_name;
 
-int harftex_version = 3;
-int harftex_revision = '1';
-const char *harftex_version_string = "0.3.1";
+int harftex_version = 4;
+int harftex_revision = '0';
+const char *harftex_version_string = "0.4.0";
 
 #include <kpathsea/c-ctype.h>
 #include <kpathsea/line.h>