diff --git a/src/msigd.cpp b/src/msigd.cpp
index d59cefd..ad3f9d2 100644
--- a/src/msigd.cpp
+++ b/src/msigd.cpp
@@ -150,6 +150,7 @@ static std::vector<identity_t> known_models =
 	{ PS341WU,           "00?", "V06", "PS341WU", LT_NONE },
 	{ MAG274QRX,         "00|", "V43", "MAG274QRX", LT_MYSTIC_OPTIX, true },
 	{ MD272QP,           "00\x85", "V51", "MD272QP", LT_NONE },                    // MAG274QRF-QD FW.011
+	{ MAG274QRFQD20,     "00\x9a", "V56", "MAG274QRF-QD (3CC2)", LT_MYSTIC_OPTIX }, // MAG274QRF-QD 2023 variant
 };
 
 enum encoding_t
diff --git a/src/psteelseries.h b/src/psteelseries.h
index 85e4e27..5e6252a 100644
--- a/src/psteelseries.h
+++ b/src/psteelseries.h
@@ -14,6 +14,7 @@
 
 #include <array>
 #include <vector>
+#include <cstdint>
 
 struct steel_rgb_entry
 {