diff --git a/client/snapClient.cpp b/client/snapClient.cpp
index 12f26770..96afefba 100644
--- a/client/snapClient.cpp
+++ b/client/snapClient.cpp
@@ -81,7 +81,7 @@ int main (int argc, char **argv)
 
 		OptionParser op("Allowed options");
 		auto helpSwitch =     op.add<Switch>("", "help", "produce help message");
-		auto debugSwitch =    op.add<Switch, Attribute::hidden>("", "debug", "enable debug logging");
+		auto debugSwitch =    op.add<Switch, Visibility::hidden>("", "debug", "enable debug logging");
 		auto versionSwitch =  op.add<Switch>("v", "version", "show version number");
 #if defined(HAS_ALSA)
 		auto listSwitch =     op.add<Switch>("l", "list", "list pcm devices");
diff --git a/externals/aixlog b/externals/aixlog
index 9c2c1419..9ecd2543 160000
--- a/externals/aixlog
+++ b/externals/aixlog
@@ -1 +1 @@
-Subproject commit 9c2c1419170dc07807724b8faa5bc73909aa7f57
+Subproject commit 9ecd25432f66f8a8cf291a9a5bae4fd137300af7
diff --git a/externals/popl b/externals/popl
index b46b8dde..c0f30940 160000
--- a/externals/popl
+++ b/externals/popl
@@ -1 +1 @@
-Subproject commit b46b8dde2317c0d32e098f6945f0ba988c6a67f2
+Subproject commit c0f309405f084baabf23e8c8b0b4b73b620d831c
diff --git a/server/snapServer.cpp b/server/snapServer.cpp
index 6a186808..547b2fdf 100644
--- a/server/snapServer.cpp
+++ b/server/snapServer.cpp
@@ -60,7 +60,7 @@ int main(int argc, char* argv[])
 
 		OptionParser op("Allowed options");
 		auto helpSwitch =        op.add<Switch>("h", "help", "Produce help message");
-		auto debugSwitch =       op.add<Switch, Attribute::hidden>("", "debug", "enable debug logging");
+		auto debugSwitch =       op.add<Switch, Visibility::hidden>("", "debug", "enable debug logging");
 		auto versionSwitch =     op.add<Switch>("v", "version", "Show version number");
 		/*auto portValue =*/         op.add<Value<size_t>>("p", "port", "Server port", settings.port, &settings.port);
 		/*auto controlPortValue =*/  op.add<Value<size_t>>("", "controlPort", "Remote control port", settings.controlPort, &settings.controlPort);