diff --git a/CMakeLists.txt b/CMakeLists.txt
index 93656e4..9c81861 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -28,7 +28,7 @@ set(META_VERSION_MINOR 2)
 set(META_VERSION_PATCH 1)
 
 # find c++utilities
-find_package(c++utilities 3.3.0 REQUIRED)
+find_package(c++utilities 4.0.0 REQUIRED)
 use_cpp_utilities()
 
 # find qtutilities
diff --git a/main.cpp b/main.cpp
index c97dc0d..330814b 100644
--- a/main.cpp
+++ b/main.cpp
@@ -41,7 +41,7 @@ int main(int argc, char *argv[])
     targetExtArg.setValueNames({"extension"});
     targetExtArg.setRequiredValueCount(1);
     targetExtArg.setCombinable(true);
-    Argument ignorePlaybackStatusArg("ignore-playback-status", string(), "ignores the playback status (does not call PlaybackStatus())");
+    Argument ignorePlaybackStatusArg("ignore-playback-status", nullptr, "ignores the playback status (does not call PlaybackStatus())");
     ignorePlaybackStatusArg.setCombinable(true);
     Argument ffmpegBinArg("ffmpeg-bin", "f", "specifies the path to the ffmpeg binary");
     ffmpegBinArg.setValueNames({"path"});