diff --git a/crypto/cipher.c b/crypto/cipher.c
index 229710f76b..64c2339d17 100644
--- a/crypto/cipher.c
+++ b/crypto/cipher.c
@@ -66,6 +66,7 @@ static const bool mode_need_iv[QCRYPTO_CIPHER_MODE__MAX] = {
     [QCRYPTO_CIPHER_MODE_CBC] = true,
     [QCRYPTO_CIPHER_MODE_XTS] = true,
     [QCRYPTO_CIPHER_MODE_CTR] = true,
+    [QCRYPTO_CIPHER_MODE_GCM] = true,
 };
 
 
diff --git a/qapi/crypto.json b/qapi/crypto.json
index 2b55befef9..6e3a98ff68 100644
--- a/qapi/crypto.json
+++ b/qapi/crypto.json
@@ -121,10 +121,12 @@
 #
 # @ctr: Counter (Since 2.8)
 #
+# @gcm: Galois/Counter Mode (Since 11.2)
+#
 # Since: 2.6
 ##
 { 'enum': 'QCryptoCipherMode',
-  'data': ['ecb', 'cbc', 'xts', 'ctr']}
+  'data': ['ecb', 'cbc', 'xts', 'ctr', 'gcm']}
 
 ##
 # @QCryptoIVGenAlgo: