diff --git a/src/main.cpp b/src/main.cpp
index 6544fa50d..a3e736e20 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -19,6 +19,7 @@
 #include <QCommandLineParser>
 #include <QDir>
 #include <QFile>
+#include <QThreadPool>
 #include <QWindow>
 
 #include "cli/Utils.h"
@@ -64,6 +65,12 @@ int main(int argc, char** argv)
     Application::setApplicationVersion(KEEPASSXC_VERSION);
     app.setProperty("KPXC_QUALIFIED_APPNAME", "org.keepassxc.KeePassXC");
 
+    // HACK: Prevent long-running threads from deadlocking the program with only 1 CPU
+    // See https://github.com/keepassxreboot/keepassxc/issues/10391
+    if (QThreadPool::globalInstance()->maxThreadCount() < 2) {
+        QThreadPool::globalInstance()->setMaxThreadCount(2);
+    }
+
     QCommandLineParser parser;
     parser.setApplicationDescription(QObject::tr("KeePassXC - cross-platform password manager"));
     parser.addPositionalArgument(