diff --git a/ldap.ts b/ldap.ts
index ef17d13..2785052 100644
--- a/ldap.ts
+++ b/ldap.ts
@@ -49,6 +49,8 @@ export async function lookupUsernameByPubkey(pubkey: string): Promise<string | u
     if (searchEntries.length > 0) {
       username = searchEntries[0].cn.toString();
     }
+
+    await client.unbind();
   } catch (e) {
     await client.unbind();
     throw e;