diff --git a/usbsniff-c99.patch b/usbsniff-c99.patch
new file mode 100644
index 0000000..3319c26
--- /dev/null
+++ b/usbsniff-c99.patch
@@ -0,0 +1,42 @@
+Make available more function prototypes, to avoid implicit function
+declarations.  This improves compatibility with future compilers.
+
+Submitted upstream: <https://github.com/vdudouyt/usbsniff/pull/3>
+
+diff --git a/usb_replay.c b/usb_replay.c
+index 32e9cf14fd854f66..3ae7bf8e740ad90c 100644
+--- a/usb_replay.c
++++ b/usb_replay.c
+@@ -18,6 +18,7 @@
+ #include <string.h>
+ #include <math.h>
+ #include <assert.h>
++#include <unistd.h>
+ #include <libusb.h>
+ #include "common.h"
+ #include "usb_replay.h"
+diff --git a/usb_replay.h b/usb_replay.h
+index 3dd098085336f5fa..b28c6c88985fbe42 100644
+--- a/usb_replay.h
++++ b/usb_replay.h
+@@ -34,4 +34,8 @@ typedef struct urb_s {
+ 	uint16_t wLength;
+ } urb_t;
+ 
++void usb_init(unsigned int vid, unsigned int pid);
++void perform_transfer(urb_t *urb);
++void print_help_and_exit(char **argv);
++
+ #endif
+diff --git a/usb_replay.y b/usb_replay.y
+index fc7c4a23406da350..1efaf08f621d5f03 100644
+--- a/usb_replay.y
++++ b/usb_replay.y
+@@ -2,6 +2,7 @@
+     #include <stdio.h>
+     #include <stdlib.h>
+     #include <string.h>
++    #include "common.h"
+     #include "usb_replay.h"
+     #include "error.h"
+     int yylex(void);
diff --git a/usbsniff.spec b/usbsniff.spec
index 4a2778a..f3ef8b0 100644
--- a/usbsniff.spec
+++ b/usbsniff.spec
@@ -3,12 +3,14 @@
 
 Name:           usbsniff
 Version:        0
-Release:        17.20170624git%{shortcommit}%{?dist}
+Release:        27.20170624git%{shortcommit}%{?dist}
 Summary:        USB traffic capture and replay tools
 
-License:        GPLv3+
+# Automatically converted from old format: GPLv3+ - review is highly recommended.
+License:        GPL-3.0-or-later
 URL:            https://github.com/vdudouyt/usbsniff
 Source0:        https://github.com/vdudouyt/usbsniff/archive/%{commit}/usbsniff-%{shortcommit}.tar.gz
+Patch0:         usbsniff-c99.patch
 
 BuildRequires: make
 BuildRequires:  gcc
@@ -24,7 +26,7 @@ the device. Useful for debugging USB devices or reverse-engineering protocols.
 
 
 %prep
-%setup -q -n usbsniff-%{commit}
+%autosetup -p1 -n usbsniff-%{commit}
 
 
 %build
@@ -44,6 +46,36 @@ make install DESTDIR=%{buildroot}
 
 
 %changelog
+* Fri Jul 17 2026 Fedora Release Engineering <releng@fedoraproject.org> - 0-27.20170624gitb4ba3c8
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild
+
+* Sat Jan 17 2026 Fedora Release Engineering <releng@fedoraproject.org> - 0-26.20170624gitb4ba3c8
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_44_Mass_Rebuild
+
+* Fri Jul 25 2025 Fedora Release Engineering <releng@fedoraproject.org> - 0-25.20170624gitb4ba3c8
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_43_Mass_Rebuild
+
+* Sun Jan 19 2025 Fedora Release Engineering <releng@fedoraproject.org> - 0-24.20170624gitb4ba3c8
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild
+
+* Thu Jul 25 2024 Miroslav Suchý <msuchy@redhat.com> - 0-23.20170624gitb4ba3c8
+- convert license to SPDX
+
+* Sat Jul 20 2024 Fedora Release Engineering <releng@fedoraproject.org> - 0-22.20170624gitb4ba3c8
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild
+
+* Sat Jan 27 2024 Fedora Release Engineering <releng@fedoraproject.org> - 0-21.20170624gitb4ba3c8
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild
+
+* Sat Jul 22 2023 Fedora Release Engineering <releng@fedoraproject.org> - 0-20.20170624gitb4ba3c8
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild
+
+* Sat Jan 21 2023 Fedora Release Engineering <releng@fedoraproject.org> - 0-19.20170624gitb4ba3c8
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild
+
+* Sat Dec 10 2022 Florian Weimer <fweimer@redhat.com> - 0-18.20170624gitb4ba3c8
+- Port to C99
+
 * Sat Jul 23 2022 Fedora Release Engineering <releng@fedoraproject.org> - 0-17.20170624gitb4ba3c8
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_37_Mass_Rebuild