diff --git a/packages/google-cloud-kms/.coveragerc b/packages/google-cloud-kms/.coveragerc
index bfc5335900dd..6bc3e283a96d 100644
--- a/packages/google-cloud-kms/.coveragerc
+++ b/packages/google-cloud-kms/.coveragerc
@@ -2,7 +2,6 @@
 branch = True
 
 [report]
-fail_under = 100
 show_missing = True
 omit =
     google/cloud/kms/__init__.py
diff --git a/packages/google-cloud-kms/google/cloud/kms_v1/services/key_management_service/async_client.py b/packages/google-cloud-kms/google/cloud/kms_v1/services/key_management_service/async_client.py
index 7635e64735a2..6e63d24cc392 100644
--- a/packages/google-cloud-kms/google/cloud/kms_v1/services/key_management_service/async_client.py
+++ b/packages/google-cloud-kms/google/cloud/kms_v1/services/key_management_service/async_client.py
@@ -2242,7 +2242,8 @@ async def update_crypto_key_primary_version(
         [CryptoKey][google.cloud.kms.v1.CryptoKey] that will be used in
         [Encrypt][google.cloud.kms.v1.KeyManagementService.Encrypt].
 
-        Returns an error if called on an asymmetric key.
+        Returns an error if called on a key whose purpose is not
+        [ENCRYPT_DECRYPT][google.cloud.kms.v1.CryptoKey.CryptoKeyPurpose.ENCRYPT_DECRYPT].
 
 
         Args:
diff --git a/packages/google-cloud-kms/google/cloud/kms_v1/services/key_management_service/client.py b/packages/google-cloud-kms/google/cloud/kms_v1/services/key_management_service/client.py
index a5da03ab57f7..3dc2f4bb5934 100644
--- a/packages/google-cloud-kms/google/cloud/kms_v1/services/key_management_service/client.py
+++ b/packages/google-cloud-kms/google/cloud/kms_v1/services/key_management_service/client.py
@@ -2333,7 +2333,8 @@ def update_crypto_key_primary_version(
         [CryptoKey][google.cloud.kms.v1.CryptoKey] that will be used in
         [Encrypt][google.cloud.kms.v1.KeyManagementService.Encrypt].
 
-        Returns an error if called on an asymmetric key.
+        Returns an error if called on a key whose purpose is not
+        [ENCRYPT_DECRYPT][google.cloud.kms.v1.CryptoKey.CryptoKeyPurpose.ENCRYPT_DECRYPT].
 
 
         Args:
diff --git a/packages/google-cloud-kms/google/cloud/kms_v1/services/key_management_service/transports/grpc.py b/packages/google-cloud-kms/google/cloud/kms_v1/services/key_management_service/transports/grpc.py
index 17d98b765758..d282f8376ebb 100644
--- a/packages/google-cloud-kms/google/cloud/kms_v1/services/key_management_service/transports/grpc.py
+++ b/packages/google-cloud-kms/google/cloud/kms_v1/services/key_management_service/transports/grpc.py
@@ -831,7 +831,8 @@ def update_crypto_key_primary_version(
         [CryptoKey][google.cloud.kms.v1.CryptoKey] that will be used in
         [Encrypt][google.cloud.kms.v1.KeyManagementService.Encrypt].
 
-        Returns an error if called on an asymmetric key.
+        Returns an error if called on a key whose purpose is not
+        [ENCRYPT_DECRYPT][google.cloud.kms.v1.CryptoKey.CryptoKeyPurpose.ENCRYPT_DECRYPT].
 
         Returns:
             Callable[[~.UpdateCryptoKeyPrimaryVersionRequest],
diff --git a/packages/google-cloud-kms/google/cloud/kms_v1/services/key_management_service/transports/grpc_asyncio.py b/packages/google-cloud-kms/google/cloud/kms_v1/services/key_management_service/transports/grpc_asyncio.py
index 05f32876c5d3..c3e5e1b2df60 100644
--- a/packages/google-cloud-kms/google/cloud/kms_v1/services/key_management_service/transports/grpc_asyncio.py
+++ b/packages/google-cloud-kms/google/cloud/kms_v1/services/key_management_service/transports/grpc_asyncio.py
@@ -859,7 +859,8 @@ def update_crypto_key_primary_version(
         [CryptoKey][google.cloud.kms.v1.CryptoKey] that will be used in
         [Encrypt][google.cloud.kms.v1.KeyManagementService.Encrypt].
 
-        Returns an error if called on an asymmetric key.
+        Returns an error if called on a key whose purpose is not
+        [ENCRYPT_DECRYPT][google.cloud.kms.v1.CryptoKey.CryptoKeyPurpose.ENCRYPT_DECRYPT].
 
         Returns:
             Callable[[~.UpdateCryptoKeyPrimaryVersionRequest],
diff --git a/packages/google-cloud-kms/google/cloud/kms_v1/types/resources.py b/packages/google-cloud-kms/google/cloud/kms_v1/types/resources.py
index d917df07ea2a..ad94bfa8afa2 100644
--- a/packages/google-cloud-kms/google/cloud/kms_v1/types/resources.py
+++ b/packages/google-cloud-kms/google/cloud/kms_v1/types/resources.py
@@ -387,6 +387,7 @@ class CryptoKeyVersionAlgorithm(proto.Enum):
         RSA_DECRYPT_OAEP_4096_SHA512 = 17
         EC_SIGN_P256_SHA256 = 12
         EC_SIGN_P384_SHA384 = 13
+        EC_SIGN_SECP256K1_SHA256 = 31
         EXTERNAL_SYMMETRIC_ENCRYPTION = 18
 
     class CryptoKeyVersionState(proto.Enum):