diff --git a/WORKSPACE b/WORKSPACE
index 9347aa2..03e715d 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "11ce7521051ca73598d099aa8a396c9ffe932a74",
+    commit = "cbbab83e99c3fa44b6ff37863cbd7bb3e9f84f47",
     # local_path = "/home/<user>/projects/bazlets",
 )
 
diff --git a/src/main/java/com/googlesource/gerrit/plugins/importer/AccountUtil.java b/src/main/java/com/googlesource/gerrit/plugins/importer/AccountUtil.java
index b3f62de..c4e3e65 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/importer/AccountUtil.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/importer/AccountUtil.java
@@ -32,6 +32,7 @@
 import com.google.gerrit.server.account.AccountState;
 import com.google.gerrit.server.account.AuthRequest;
 import com.google.gerrit.server.account.CreateAccount;
+import com.google.gerrit.server.account.ExternalId;
 import com.google.gerrit.server.account.VersionedAuthorizedKeys;
 import com.google.gerrit.server.config.AuthConfig;
 import com.google.gwtorm.server.OrmException;
@@ -113,7 +114,7 @@
   private Account.Id createAccountByLdapAndAddSshKeys(GerritApi api, AccountInfo acc)
       throws NoSuchAccountException, IOException, OrmException, RestApiException,
           ConfigInvalidException {
-    if (!acc.username.matches(Account.USER_NAME_PATTERN)) {
+    if (!ExternalId.isValidUsername(acc.username)) {
       throw new NoSuchAccountException(String.format("User %s not found", acc.username));
     }