diff --git a/cpu.go b/cpu.go
index 76fee54..c2a61e7 100644
--- a/cpu.go
+++ b/cpu.go
@@ -2,9 +2,9 @@
 
 package blake3
 
-import "github.com/klauspost/cpuid"
+import "github.com/klauspost/cpuid/v2"
 
 var (
-	haveAVX2   = cpuid.CPU.AVX2()
-	haveAVX512 = cpuid.CPU.AVX512F()
+	haveAVX2   = cpuid.CPU.Supports(cpuid.AVX2)
+	haveAVX512 = cpuid.CPU.Supports(cpuid.AVX512F)
 )
diff --git a/cpu_darwin.go b/cpu_darwin.go
index 5af5635..372b734 100644
--- a/cpu_darwin.go
+++ b/cpu_darwin.go
@@ -3,7 +3,7 @@ package blake3
 import (
 	"syscall"
 
-	"github.com/klauspost/cpuid"
+	"github.com/klauspost/cpuid/v2"
 )
 
 var (
@@ -12,8 +12,8 @@ var (
 )
 
 func init() {
-	haveAVX2 = cpuid.CPU.AVX2()
-	haveAVX512 = cpuid.CPU.AVX512F()
+	haveAVX2 = cpuid.CPU.Supports(cpuid.AVX2)
+	haveAVX512 = cpuid.CPU.Supports(cpuid.AVX512F)
 	if !haveAVX512 {
 		// On some Macs, AVX512 detection is buggy, so fallback to sysctl
 		b, _ := syscall.Sysctl("hw.optional.avx512f")
diff --git a/go.mod b/go.mod
index b793307..8f0680f 100644
--- a/go.mod
+++ b/go.mod
@@ -2,6 +2,4 @@ module lukechampine.com/blake3
 
 go 1.13
 
-require (
-	github.com/klauspost/cpuid v1.3.1
-)
+require github.com/klauspost/cpuid/v2 v2.0.9
diff --git a/go.sum b/go.sum
index f568b65..a389a66 100644
--- a/go.sum
+++ b/go.sum
@@ -1,2 +1,2 @@
-github.com/klauspost/cpuid v1.3.1 h1:5JNjFYYQrZeKRJ0734q51WCEEn2huer72Dc7K+R/b6s=
-github.com/klauspost/cpuid v1.3.1/go.mod h1:bYW4mA6ZgKPob1/Dlai2LviZJO7KGI3uoWLd42rAQw4=
+github.com/klauspost/cpuid/v2 v2.0.9 h1:lgaqFMSdTdQYdZ04uHyN2d/eKdOMyi2YLSvlQIBFYa4=
+github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=