diff --git a/packages/contract/src/builder.ts b/packages/contract/src/builder.ts
index 93bcd552f..69f6f08fc 100644
--- a/packages/contract/src/builder.ts
+++ b/packages/contract/src/builder.ts
@@ -187,7 +187,7 @@ export class ContractBuilder<
 }
 
 export const oc = new ContractBuilder<
-  Schema<unknown, unknown>,
+  Schema<void, unknown>,
   Schema<unknown, unknown>,
   Record<never, never>,
   Record<never, never>
diff --git a/packages/server/src/builder.ts b/packages/server/src/builder.ts
index c1afe03fe..f60781115 100644
--- a/packages/server/src/builder.ts
+++ b/packages/server/src/builder.ts
@@ -336,7 +336,7 @@ export class Builder<
 export const os = new Builder<
   Record<never, never>,
   Record<never, never>,
-  Schema<unknown, unknown>,
+  Schema<void, unknown>,
   Schema<unknown, unknown>,
   Record<never, never>,
   Record<never, never>