diff --git a/src/types.ts b/src/types.ts
index 71cec3ee..922d1693 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -1,4 +1,4 @@
-import { Procedure, ProcedureParams, Router } from '@trpc/server';
+import { Procedure, ProcedureParams, ProcedureType, Router } from '@trpc/server';
 import type { RootConfig } from '@trpc/server/dist/core/internals/config';
 import { TRPC_ERROR_CODE_KEY } from '@trpc/server/rpc';
 import type { RouterDef } from '@trpc/server/src/core/router';
@@ -37,7 +37,7 @@ export type OpenApiMeta<TMeta = TRPCMeta> = TMeta & {
 
 export type OpenApiProcedure<TMeta = TRPCMeta> = Procedure<
   'query' | 'mutation',
-  ProcedureParams<
+  { type: ProcedureType } & ProcedureParams<
     RootConfig<{
       transformer: any;
       errorShape: any;
diff --git a/src/utils/procedure.ts b/src/utils/procedure.ts
index 8881bc8b..64e8c14c 100644
--- a/src/utils/procedure.ts
+++ b/src/utils/procedure.ts
@@ -23,6 +23,7 @@ const getProcedureType = (procedure: OpenApiProcedure): ProcedureType => {
   if (procedure._def.query) return 'query';
   if (procedure._def.mutation) return 'mutation';
   if (procedure._def.subscription) return 'subscription';
+  if (procedure._def.type) return procedure._def.type;
   throw new Error('Unknown procedure type');
 };