diff --git a/include/cpuinfo_aarch64.h b/include/cpuinfo_aarch64.h
index d85d46d..1b57d21 100644
--- a/include/cpuinfo_aarch64.h
+++ b/include/cpuinfo_aarch64.h
@@ -71,6 +71,7 @@ typedef struct {
   int dgh : 1;         // Data Gathering Hint instruction.
   int rng : 1;         // True random number generator support.
   int bti : 1;         // Branch target identification.
+  int mte : 1;         // Memory tagging extension.
 
   // Make sure to update Aarch64FeaturesEnum below if you add a field here.
 } Aarch64Features;
@@ -139,6 +140,7 @@ typedef enum {
   AARCH64_DGH,
   AARCH64_RNG,
   AARCH64_BTI,
+  AARCH64_MTE,
   AARCH64_LAST_,
 } Aarch64FeaturesEnum;
 
diff --git a/include/internal/hwcaps.h b/include/internal/hwcaps.h
index 62037c8..70829c1 100644
--- a/include/internal/hwcaps.h
+++ b/include/internal/hwcaps.h
@@ -79,6 +79,7 @@ CPU_FEATURES_START_CPP_NAMESPACE
 #define AARCH64_HWCAP2_DGH (1UL << 15)
 #define AARCH64_HWCAP2_RNG (1UL << 16)
 #define AARCH64_HWCAP2_BTI (1UL << 17)
+#define AARCH64_HWCAP2_MTE (1UL << 18)
 
 // http://elixir.free-electrons.com/linux/latest/source/arch/arm/include/uapi/asm/hwcap.h
 #define ARM_HWCAP_SWP (1UL << 0)
diff --git a/src/cpuinfo_aarch64.c b/src/cpuinfo_aarch64.c
index 0a52718..62d6905 100644
--- a/src/cpuinfo_aarch64.c
+++ b/src/cpuinfo_aarch64.c
@@ -75,7 +75,8 @@
   FEATURE(AARCH64_BF16, bf16, "bf16", 0, AARCH64_HWCAP2_BF16)                 \
   FEATURE(AARCH64_DGH, dgh, "dgh", 0, AARCH64_HWCAP2_DGH)                     \
   FEATURE(AARCH64_RNG, rng, "rng", 0, AARCH64_HWCAP2_RNG)                     \
-  FEATURE(AARCH64_BTI, bti, "bti", 0, AARCH64_HWCAP2_BTI)
+  FEATURE(AARCH64_BTI, bti, "bti", 0, AARCH64_HWCAP2_BTI)                     \
+  FEATURE(AARCH64_MTE, mte, "mte", 0, AARCH64_HWCAP2_MTE)
 #define DEFINE_TABLE_FEATURE_TYPE Aarch64Features
 #include "define_tables.h"
 
diff --git a/test/cpuinfo_aarch64_test.cc b/test/cpuinfo_aarch64_test.cc
index 5afaaa8..20f0996 100644
--- a/test/cpuinfo_aarch64_test.cc
+++ b/test/cpuinfo_aarch64_test.cc
@@ -165,6 +165,7 @@ CPU revision    : 3)");
   EXPECT_FALSE(info.features.dgh);
   EXPECT_FALSE(info.features.rng);
   EXPECT_FALSE(info.features.bti);
+  EXPECT_FALSE(info.features.mte);
 }
 
 }  // namespace