4 files changed, 4 insertions, 0 deletions
diff --git a/src/regex/regcomp.c b/src/regex/regcomp.c
index 9c3585b1..8dc2aa8d 100644
--- a/src/regex/regcomp.c
+++ b/src/regex/regcomp.c
@@ -1,3 +1,4 @@
+#include "sys/types.h"
 #include <regex.h>
 
 int regcomp(regex_t * restrict preg, const char * restrict pattern, int cflags)
diff --git a/src/regex/regerror.c b/src/regex/regerror.c
index 6c11fb3b..49d7a28e 100644
--- a/src/regex/regerror.c
+++ b/src/regex/regerror.c
@@ -1,3 +1,4 @@
+#include "sys/types.h"
 #include <regex.h>
 
 size_t regerror(int errcode, const regex_t * restrict preg, char * restrict errbuf, size_t errbuf_size)
diff --git a/src/regex/regexec.c b/src/regex/regexec.c
index d749c257..1051f732 100644
--- a/src/regex/regexec.c
+++ b/src/regex/regexec.c
@@ -1,3 +1,4 @@
+#include "sys/types.h"
 #include <regex.h>
 
 int regexec(const regex_t * restrict preg, const char * restrict string, size_t nmatch, regmatch_t pmatch[restrict], int eflags)
diff --git a/src/regex/regfree.c b/src/regex/regfree.c
index 14395e6a..34cbb379 100644
--- a/src/regex/regfree.c
+++ b/src/regex/regfree.c
@@ -1,3 +1,4 @@
+#include "sys/types.h"
 #include <regex.h>
 
 void regfree(regex_t * preg)