diff --git a/deployment/mistral/mistral-base.yaml b/deployment/mistral/mistral-base.yaml
index 01b5ccd48b..5ba93c116c 100644
--- a/deployment/mistral/mistral-base.yaml
+++ b/deployment/mistral/mistral-base.yaml
@@ -58,6 +58,10 @@ parameters:
     type: string
     default: 'regionOne'
     description: Keystone region for endpoint
+  MistralRpcResponseTimeout:
+    type: number
+    default: 120
+    description: Mistral RPC timeout
 
 conditions:
   service_debug_unset: {equals : [{get_param: MistralDebug}, '']}
@@ -95,7 +99,7 @@ outputs:
           - service_debug_unset
           - {get_param: Debug }
           - {get_param: MistralDebug }
-        mistral::rpc_response_timeout: 120
+        mistral::rpc_response_timeout: {get_param: MistralRpcResponseTimeout}
         mistral::keystone::authtoken::project_name: 'service'
         mistral::keystone::authtoken::user_domain_name: 'Default'
         mistral::keystone::authtoken::project_domain_name: 'Default'