diff --git a/hermit/usr/newlib b/hermit/usr/newlib
index 6c1f50c29..018dde198 160000
--- a/hermit/usr/newlib
+++ b/hermit/usr/newlib
@@ -1 +1 @@
-Subproject commit 6c1f50c29faf3096050ffcfeadf0c051d532ea7b
+Subproject commit 018dde1981d2d27b40aa1fad01422750dbd59665
diff --git a/hermit/usr/pte b/hermit/usr/pte
index be9e07a03..2e946da5c 160000
--- a/hermit/usr/pte
+++ b/hermit/usr/pte
@@ -1 +1 @@
-Subproject commit be9e07a0375955068500e7d2fe8eda9eb2c569d4
+Subproject commit 2e946da5c46a44958a2690a53a686af023b952c9
diff --git a/hermit/usr/tests/hello.c b/hermit/usr/tests/hello.c
index 353b3f7e6..fdb408cb5 100644
--- a/hermit/usr/tests/hello.c
+++ b/hermit/usr/tests/hello.c
@@ -30,20 +30,31 @@
 #include <string.h>
 #include <unistd.h>
 #include <errno.h>
+#include <signal.h>
 
 #define N	255
 
+static void test_handler(int s)
+{
+	printf("Receive signal with number %d\n", s);
+}
+
 int main(int argc, char** argv)
 {
 	int i, random;
 	FILE* file;
 
+	// register test handler
+	signal(SIGUSR1, test_handler);
+
 	printf("Hello World!!!\n");
 	//for(i=0; environ[i]; i++)
 	//	printf("environ[%d] = %s\n", i, environ[i]);
 	for(i=0; i<argc; i++)
 		printf("argv[%d] = %s\n", i, argv[i]);
 
+	raise(SIGUSR1);
+
 	file = fopen("/etc/hostname", "r");
 	if (file)
 	{