diff --git a/crates/musicus/src/import/source_selector.rs b/crates/musicus/src/import/source_selector.rs
index 7f87d29..7045fa2 100644
--- a/crates/musicus/src/import/source_selector.rs
+++ b/crates/musicus/src/import/source_selector.rs
@@ -56,6 +56,8 @@ impl Screen<(), ()> for SourceSelector {
                     (&gettext("Select"), gtk::ResponseType::Accept),
                 ]);
 
+            dialog.set_modal(true);
+
             dialog.connect_response(clone!(@weak this => move |dialog, response| {
                 this.stack.set_visible_child_name("loading");
                 dialog.hide();
diff --git a/crates/musicus/src/preferences/mod.rs b/crates/musicus/src/preferences/mod.rs
index 81972db..530b24d 100644
--- a/crates/musicus/src/preferences/mod.rs
+++ b/crates/musicus/src/preferences/mod.rs
@@ -60,6 +60,8 @@ impl Preferences {
                     (&gettext("Select"), gtk::ResponseType::Accept),
                 ]);
 
+            dialog.set_modal(true);
+
             dialog.connect_response(clone!(@strong this => move |dialog, response| {
                 if let gtk::ResponseType::Accept = response {
                     if let Some(file) = dialog.get_file() {
diff --git a/crates/musicus/src/screens/welcome.rs b/crates/musicus/src/screens/welcome.rs
index 55e7f23..926bd7a 100644
--- a/crates/musicus/src/screens/welcome.rs
+++ b/crates/musicus/src/screens/welcome.rs
@@ -56,6 +56,8 @@ impl Screen<(), ()> for WelcomeScreen {
                     (&gettext("Select"), gtk::ResponseType::Accept),
                 ]);
 
+            dialog.set_modal(true);
+
             dialog.connect_response(clone!(@weak this => move |dialog, response| {
                 if let gtk::ResponseType::Accept = response {
                     if let Some(file) = dialog.get_file() {