diff --git a/crypto_kem/hqc-128/META.yml b/crypto_kem/hqc-128/META.yml
index 36ca72fa..fb8effea 100644
--- a/crypto_kem/hqc-128/META.yml
+++ b/crypto_kem/hqc-128/META.yml
@@ -32,3 +32,5 @@ implementations:
                 - Darwin
             required_flags:
                 - avx2
+                - bmi1
+                - pclmul
diff --git a/crypto_kem/hqc-192/META.yml b/crypto_kem/hqc-192/META.yml
index ca521a76..a2a90385 100644
--- a/crypto_kem/hqc-192/META.yml
+++ b/crypto_kem/hqc-192/META.yml
@@ -32,3 +32,5 @@ implementations:
                 - Darwin
             required_flags:
                 - avx2
+                - bmi1
+                - pclmul
diff --git a/crypto_kem/hqc-256/META.yml b/crypto_kem/hqc-256/META.yml
index f49b248a..d50a5dc2 100644
--- a/crypto_kem/hqc-256/META.yml
+++ b/crypto_kem/hqc-256/META.yml
@@ -32,3 +32,5 @@ implementations:
                 - Darwin
             required_flags:
                 - avx2
+                - bmi1
+                - pclmul
diff --git a/crypto_kem/hqc-rmrs-128/META.yml b/crypto_kem/hqc-rmrs-128/META.yml
index f39f1694..27211f7b 100644
--- a/crypto_kem/hqc-rmrs-128/META.yml
+++ b/crypto_kem/hqc-rmrs-128/META.yml
@@ -32,3 +32,5 @@ implementations:
                 - Darwin
             required_flags:
                 - avx2
+                - bmi1
+                - pclmul
diff --git a/crypto_kem/hqc-rmrs-192/META.yml b/crypto_kem/hqc-rmrs-192/META.yml
index 01da3512..ac654556 100644
--- a/crypto_kem/hqc-rmrs-192/META.yml
+++ b/crypto_kem/hqc-rmrs-192/META.yml
@@ -32,3 +32,5 @@ implementations:
                 - Darwin
             required_flags:
                 - avx2
+                - bmi1
+                - pclmul
diff --git a/crypto_kem/hqc-rmrs-256/META.yml b/crypto_kem/hqc-rmrs-256/META.yml
index 1b37a436..0c18cee2 100644
--- a/crypto_kem/hqc-rmrs-256/META.yml
+++ b/crypto_kem/hqc-rmrs-256/META.yml
@@ -32,3 +32,5 @@ implementations:
                 - Darwin
             required_flags:
                 - avx2
+                - bmi1
+                - pclmul