diff --git a/packages/backend-openapi-utils/src/proxy/setup.ts b/packages/backend-openapi-utils/src/proxy/setup.ts
index a7205a883a..8f24aa2512 100644
--- a/packages/backend-openapi-utils/src/proxy/setup.ts
+++ b/packages/backend-openapi-utils/src/proxy/setup.ts
@@ -44,11 +44,12 @@ export class Proxy {
         this.requestResponsePairs.set(request, response);
       }
       delete this.#openRequests[response.id];
-      try {
-        this.validator.validate(request, response);
-      } catch (err) {
+      this.validator.validate(request, response).catch(err => {
+        if (process.env.THROW) {
+          throw err;
+        }
         console.error(err);
-      }
+      });
     });
   }
 
diff --git a/packages/backend-openapi-utils/src/schema/validation.ts b/packages/backend-openapi-utils/src/schema/validation.ts
index 104482a485..9f2f22b9ac 100644
--- a/packages/backend-openapi-utils/src/schema/validation.ts
+++ b/packages/backend-openapi-utils/src/schema/validation.ts
@@ -522,7 +522,7 @@ export class OpenApiProxyValidator {
     ];
   }
 
-  validate(request: CompletedRequest, response: CompletedResponse) {
+  async validate(request: CompletedRequest, response: CompletedResponse) {
     const operation = this.findOperation(request);
     if (!operation) {
       throw RequestErrorFactory.createRequestError(
@@ -534,13 +534,15 @@ export class OpenApiProxyValidator {
     const [path, operationSchema] = operation;
 
     const validators = this.validators!;
-    for (const validator of validators) {
-      validator.validate({
-        pair: { request, response },
-        operationSchema,
-        path,
-      });
-    }
+    await Promise.all(
+      validators.map(validator =>
+        validator.validate({
+          pair: { request, response },
+          operationSchema,
+          path,
+        }),
+      ),
+    );
   }
 
   private findOperation(