diff --git a/README.md b/README.md
index ed75ca2..9e4eb5e 100644
--- a/README.md
+++ b/README.md
@@ -6,8 +6,8 @@ registration code and use it in Beeper Mini.
 ## Supported MacOS versions
 The tool is currently quite hacky, so it only works on specific versions of macOS.
 
-* Intel: 10.14.6, 10.15.1 - 10.15.7, 11.5 - 11.7, 12.7.1, 13.3.1, 13.5 - 13.6, 14.0 - 14.3
-* Apple Silicon: 12.7.1, 13.3.1, 13.5 - 13.6, 14.0 - 14.3
+* Intel: 10.14.6, 10.15.1 - 10.15.7, 11.5 - 11.7, 12.7.1, 13.3.1, 13.5 - 13.6.4, 14.0 - 14.3
+* Apple Silicon: 12.7.1, 13.3.1, 13.5 - 13.6.4, 14.0 - 14.3
 
 On unsupported versions, it will tell you that it's unsupported and exit.
 A future version may work in less hacky ways to support more OS versions.
diff --git a/nac/offsets.go b/nac/offsets.go
index 46753d3..1f70219 100644
--- a/nac/offsets.go
+++ b/nac/offsets.go
@@ -238,6 +238,8 @@ var offsets = map[[32]byte]imdOffsetTuple{
 	hexToByte32("fff8db27fef2a2b874f7bc6fb303a98e3e3b8aceb8dd4c5bfa2bad7b76ea438a"): offsets_13_6,
 	// macOS 13.6.3
 	hexToByte32("2c674438d30bf489695f2d1b8520afc30cbfb183af82d2fc53d74ce39a25b24e"): offsets_13_6,
+	// macOS 13.6.4
+	hexToByte32("8f22dcfda56a4d3c38931f20fe33db1a6720e4d8571e452aa5a8b56b4c69842a"): offsets_13_6,
 	// macOS 14.0
 	hexToByte32("9ffda11206ef874b1e6cb1d8f8fed330d2ac2cbbc87afc15485f4e4371afcd9a"): offsets_14_0,
 	// macOS 14.1 - 14.1.2