diff --git a/src/h2.c b/src/h2.c
index 9c02cd3..4803137 100644
--- a/src/h2.c
+++ b/src/h2.c
@@ -25,7 +25,7 @@
  * OTHER DEALINGS IN THE SOFTWARE.
  */
 
-#include <stdint.h>
+#include <inttypes.h>
 #include <common/config.h>
 #include <common/h2.h>
 #include <common/http-hdr.h>
diff --git a/src/hpack-dec.c b/src/hpack-dec.c
index e179f29..7f3e762 100644
--- a/src/hpack-dec.c
+++ b/src/hpack-dec.c
@@ -25,7 +25,7 @@
  * OTHER DEALINGS IN THE SOFTWARE.
  */
 
-#include <stdint.h>
+#include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
diff --git a/src/hpack-enc.c b/src/hpack-enc.c
index 1e57153..1a6fa1c 100644
--- a/src/hpack-enc.c
+++ b/src/hpack-enc.c
@@ -25,7 +25,7 @@
  * OTHER DEALINGS IN THE SOFTWARE.
  */
 
-#include <stdint.h>
+#include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
diff --git a/src/hpack-huff.c b/src/hpack-huff.c
index cbf1fa0..bdcff7f 100644
--- a/src/hpack-huff.c
+++ b/src/hpack-huff.c
@@ -26,7 +26,7 @@
  */
 
 #include <stdio.h>
-#include <stdint.h>
+#include <inttypes.h>
 #include <string.h>
 
 #include <common/config.h>
diff --git a/src/hpack-tbl.c b/src/hpack-tbl.c
index 24eb7c4..70d7f35 100644
--- a/src/hpack-tbl.c
+++ b/src/hpack-tbl.c
@@ -25,7 +25,7 @@
  * OTHER DEALINGS IN THE SOFTWARE.
  */
 
-#include <stdint.h>
+#include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
diff --git a/src/sha1.c b/src/sha1.c
index 3b562b5..b7c2d70 100644
--- a/src/sha1.c
+++ b/src/sha1.c
@@ -26,7 +26,7 @@
 
 /* this is only to get definitions for memcpy(), ntohl() and htonl() */
 #include <string.h>
-#include <stdint.h>
+#include <inttypes.h>
 #include <arpa/inet.h>
 
 #include <import/sha1.h>
diff --git a/src/time.c b/src/time.c
index cd042de..94b498c 100644
--- a/src/time.c
+++ b/src/time.c
@@ -10,7 +10,7 @@
  *
  */
 
-#include <stdint.h>
+#include <inttypes.h>
 #include <unistd.h>
 #include <sys/time.h>
 
diff --git a/src/xxhash.c b/src/xxhash.c
index 8753721..31424de 100644
--- a/src/xxhash.c
+++ b/src/xxhash.c
@@ -98,7 +98,7 @@
 // Basic Types
 //**************************************
 #if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L   // C99
-# include <stdint.h>
+# include <inttypes.h>
 typedef uint8_t  BYTE;
 typedef uint16_t U16;
 typedef uint32_t U32;