diff --git a/schema/cryptography-defs.json b/schema/cryptography-defs.json
index 0a2bdff6..93a7f8ca 100644
--- a/schema/cryptography-defs.json
+++ b/schema/cryptography-defs.json
@@ -1519,6 +1519,51 @@
           "primitive": "drbg"
         }
       ]
+    },
+    {
+      "family": "CTR_DRBG",
+      "standard": [
+        {
+          "name": "SP800-90Ar1",
+          "url": "https://doi.org/10.6028/NIST.SP.800-90Ar1"
+        }
+      ],
+      "variant": [
+        {
+          "pattern": "CTR_DRBG[-{cipherAlgorithm}][-{keyLength}]",
+          "primitive": "drbg"
+        }
+      ]
+    },
+    {
+      "family": "Hash_DRBG",
+      "standard": [
+        {
+          "name": "SP800-90Ar1",
+          "url": "https://doi.org/10.6028/NIST.SP.800-90Ar1"
+        }
+      ],
+      "variant": [
+        {
+          "pattern": "Hash_DRBG[-{hashFunction}]",
+          "primitive": "drbg"
+        }
+      ]
+    },
+    {
+      "family": "HMAC_DRBG",
+      "standard": [
+        {
+          "name": "SP800-90Ar1",
+          "url": "https://doi.org/10.6028/NIST.SP.800-90Ar1"
+        }
+      ],
+      "variant": [
+        {
+          "pattern": "HMAC_DRBG[-{hashFunction}]",
+          "primitive": "drbg"
+        }
+      ]
     }
   ],
   "ellipticCurves": [
diff --git a/schema/cryptography-defs.schema.json b/schema/cryptography-defs.schema.json
index 1a873a01..3c98d909 100644
--- a/schema/cryptography-defs.schema.json
+++ b/schema/cryptography-defs.schema.json
@@ -260,6 +260,7 @@
         "CMEA",
         "ChaCha",
         "ChaCha20",
+        "CTR_DRBG",
         "DES",
         "DSA",
         "ECDH",
@@ -270,10 +271,12 @@
         "FFDH",
         "Fortuna",
         "GOST",
+        "Hash_DRBG",
         "HPKE",
         "HC",
         "HKDF",
         "HMAC",
+        "HMAC_DRBG",
         "IDEA",
         "IKE-PRF",
         "KMAC",