diff --git a/camkes-linux-artifacts/camkes-linux-apps/camkes-connector-apps/pkgs/dataport/read.c b/camkes-linux-artifacts/camkes-linux-apps/camkes-connector-apps/pkgs/dataport/read.c
index cf57b4c..143fbf0 100644
--- a/camkes-linux-artifacts/camkes-linux-apps/camkes-connector-apps/pkgs/dataport/read.c
+++ b/camkes-linux-artifacts/camkes-linux-apps/camkes-connector-apps/pkgs/dataport/read.c
@@ -8,6 +8,7 @@
 #include <fcntl.h>
 #include <unistd.h>
 #include <assert.h>
+#include <stdlib.h>
 
 #include <sys/types.h>
 #include <sys/stat.h>
diff --git a/camkes-linux-artifacts/camkes-linux-apps/camkes-connector-apps/pkgs/dataport/write.c b/camkes-linux-artifacts/camkes-linux-apps/camkes-connector-apps/pkgs/dataport/write.c
index 35924b6..8a4342f 100644
--- a/camkes-linux-artifacts/camkes-linux-apps/camkes-connector-apps/pkgs/dataport/write.c
+++ b/camkes-linux-artifacts/camkes-linux-apps/camkes-connector-apps/pkgs/dataport/write.c
@@ -8,6 +8,7 @@
 #include <fcntl.h>
 #include <unistd.h>
 #include <assert.h>
+#include <stdlib.h>
 
 #include <sys/types.h>
 #include <sys/stat.h>