diff --git a/cmake/MatrixStructs.cmake b/cmake/MatrixStructs.cmake
index 61cf619..4b1a3c1 100644
--- a/cmake/MatrixStructs.cmake
+++ b/cmake/MatrixStructs.cmake
@@ -23,7 +23,7 @@ ExternalProject_Add(
   MatrixStructs
 
   GIT_REPOSITORY https://github.com/mujx/matrix-structs
-  GIT_TAG 850100c0ac2b5a04720b2a1f09270749bf99f7dd
+  GIT_TAG 701eb5b06c370c23bca35a957f5a208c2115b52f
 
   BUILD_IN_SOURCE 1
   SOURCE_DIR ${MATRIX_STRUCTS_ROOT}
diff --git a/src/InviteeItem.cc b/src/InviteeItem.cc
index c544032..5ae2a7b 100644
--- a/src/InviteeItem.cc
+++ b/src/InviteeItem.cc
@@ -9,7 +9,7 @@ constexpr int IconSize    = 13;
 
 InviteeItem::InviteeItem(mtx::identifiers::User user, QWidget *parent)
   : QWidget{parent}
-  , user_{QString::fromStdString(user.toString())}
+  , user_{QString::fromStdString(user.to_string())}
 {
         auto topLayout_ = new QHBoxLayout(this);
         topLayout_->setSpacing(0);
diff --git a/src/MatrixClient.cc b/src/MatrixClient.cc
index 5f9e1b8..dff7b82 100644
--- a/src/MatrixClient.cc
+++ b/src/MatrixClient.cc
@@ -154,7 +154,7 @@ MatrixClient::login(const QString &username, const QString &password) noexcept
                         if (server_.port() > 0)
                                 hostname = QString("%1:%2").arg(server_.host()).arg(server_.port());
 
-                        emit loginSuccess(QString::fromStdString(login.user_id.toString()),
+                        emit loginSuccess(QString::fromStdString(login.user_id.to_string()),
                                           hostname,
                                           QString::fromStdString(login.access_token));
                 } catch (std::exception &e) {
@@ -228,7 +228,7 @@ MatrixClient::registerUser(const QString &user,
                 // Try to parse a regular register response.
                 try {
                         mtx::responses::Register res = nlohmann::json::parse(data);
-                        emit registerSuccess(QString::fromStdString(res.user_id.toString()),
+                        emit registerSuccess(QString::fromStdString(res.user_id.to_string()),
                                              QString::fromStdString(res.user_id.hostname()),
                                              QString::fromStdString(res.access_token));
                 } catch (const std::exception &e) {