1 files changed, 1 insertions, 0 deletions

diff --git a/driver.c b/driver.c
index df50b0f..7bb2be2 100644
--- a/driver.c
+++ b/driver.c
@@ -10,6 +10,7 @@
 
 #include <fcntl.h>
 #include <limits.h>
+#include <signal.h>
 #include <spawn.h>
 #include <sys/wait.h>
 #include <unistd.h>