diff --git a/docs/index.md b/docs/index.md
index 851b7a5..1831d23 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -48,6 +48,7 @@ provider "mcma" {
 ### Optional
 
 - `aws4_auth` (Block Set) (see [below for nested schema](#nestedblock--aws4_auth))
+- `mcma_api_key_auth` (Block Set) (see [below for nested schema](#nestedblock--mcma_api_key_auth))
 - `service_registry_auth_type` (String) The auth type to use for the services endpoint of the MCMA Service Registry
 
 <a id="nestedblock--aws4_auth"></a>
@@ -59,3 +60,11 @@ Optional:
 - `profile` (String) The AWS profile to use for authentication
 - `region` (String) The AWS region to use for authentication
 - `secret_key` (String) The AWS secret key to use for authentication. Requires that access_key also be specified
+
+
+<a id="nestedblock--mcma_api_key_auth"></a>
+### Nested Schema for `mcma_api_key_auth`
+
+Required:
+
+- `api_key` (String) The MCMA API key (header = 'x-mcma-api-key') to use for authentication
diff --git a/examples/provider/provider.tf b/examples/provider/provider.tf
index a616301..ea0d8a7 100644
--- a/examples/provider/provider.tf
+++ b/examples/provider/provider.tf
@@ -20,4 +20,12 @@ provider "mcma" {
     access_key = "accesskey"
     secret_key = "secretkey"
   }
+}
+
+# MCMA API Key auth
+provider "mcma" {
+  service_registry_url = "https://service-registry-example.mcma.io/api/"
+  mcma_api_key_auth {
+    api_key = "abcd1234efgh5678"
+  }
 }
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