diff --git a/src/crypto/sha1/sha1block_arm64.go b/src/crypto/sha1/sha1block_arm64.go
index ab296e3793..173c40fec8 100644
--- a/src/crypto/sha1/sha1block_arm64.go
+++ b/src/crypto/sha1/sha1block_arm64.go
@@ -15,7 +15,7 @@ var k = []uint32{
 
 var hasSHA1 = cpu.ARM64.HasSHA1
 
-
+//go:noescape
 func sha1block(h []uint32, p []byte, k []uint32)
 
 func block(dig *digest, p []byte) {
diff --git a/src/crypto/sha256/sha256block_arm64.go b/src/crypto/sha256/sha256block_arm64.go
index 48c436baf3..75bbcbe0eb 100644
--- a/src/crypto/sha256/sha256block_arm64.go
+++ b/src/crypto/sha256/sha256block_arm64.go
@@ -10,6 +10,7 @@ var k = _K
 
 var hasSHA2 = cpu.ARM64.HasSHA2
 
+//go:noescape
 func sha256block(h []uint32, p []byte, k []uint32)
 
 func block(dig *digest, p []byte) {