diff --git a/src/unit_tests/C++/apex_init.cpp b/src/unit_tests/C++/apex_init.cpp
index a94d4ada..fa36ad6b 100644
--- a/src/unit_tests/C++/apex_init.cpp
+++ b/src/unit_tests/C++/apex_init.cpp
@@ -1,10 +1,12 @@
 #include "apex_api.hpp"
+#include <unistd.h>
 
 int main (int argc, char** argv) {
   APEX_UNUSED(argc);
   APEX_UNUSED(argv);
   apex::init("apex::init unit test", 0, 1);
   apex::apex_options::use_screen_output(true);
+  sleep(1);
   apex::finalize();
   apex::cleanup();
   return 0;
diff --git a/src/unit_tests/C++/apex_init_args.cpp b/src/unit_tests/C++/apex_init_args.cpp
index a94d4ada..fa36ad6b 100644
--- a/src/unit_tests/C++/apex_init_args.cpp
+++ b/src/unit_tests/C++/apex_init_args.cpp
@@ -1,10 +1,12 @@
 #include "apex_api.hpp"
+#include <unistd.h>
 
 int main (int argc, char** argv) {
   APEX_UNUSED(argc);
   APEX_UNUSED(argv);
   apex::init("apex::init unit test", 0, 1);
   apex::apex_options::use_screen_output(true);
+  sleep(1);
   apex::finalize();
   apex::cleanup();
   return 0;
diff --git a/src/unit_tests/C/apex_init.c b/src/unit_tests/C/apex_init.c
index 33a128c8..962afd84 100644
--- a/src/unit_tests/C/apex_init.c
+++ b/src/unit_tests/C/apex_init.c
@@ -5,6 +5,7 @@
 int main (int argc, char** argv) {
   apex_init("apex_init unit test", 0, 1);
   apex_set_use_screen_output(1);
+  sleep(1);
   apex_finalize();
   apex_cleanup();
   return 0;
diff --git a/src/unit_tests/C/apex_init_args.c b/src/unit_tests/C/apex_init_args.c
index 766d527f..d6b20666 100644
--- a/src/unit_tests/C/apex_init_args.c
+++ b/src/unit_tests/C/apex_init_args.c
@@ -5,6 +5,7 @@
 int main (int argc, char** argv) {
   apex_init("apex_init_args unit test", 0, 1);
   apex_set_use_screen_output(1);
+  sleep(1);
   apex_finalize();
   apex_cleanup();
   return 0;