diff --git a/src/promisify.ts b/src/promisify.ts
index 60cc662..3350ff9 100644
--- a/src/promisify.ts
+++ b/src/promisify.ts
@@ -24,6 +24,7 @@ export default function promisify(fn: LegacyCallback): AgentCallbackPromise {
 					if (err) {
 						reject(err);
 					} else {
+						// @ts-ignore
 						resolve(rtn);
 					}
 				}
diff --git a/test/test.ts b/test/test.ts
index 7c975de..5a5c808 100644
--- a/test/test.ts
+++ b/test/test.ts
@@ -250,6 +250,7 @@ describe('Agent (TypeScript)', () => {
 				await req({ agent, ...info });
 			} catch (err) {
 				gotError = true;
+// @ts-ignore
 				assert.equal(err.message, 'bad');
 			}
 
@@ -277,6 +278,7 @@ describe('Agent (TypeScript)', () => {
 				await req({ agent, ...info });
 			} catch (err) {
 				gotError = true;
+// @ts-ignore
 				assert.equal(err.message, 'bad');
 			}