diff --git a/opensips-c99.patch b/opensips-c99.patch
new file mode 100644
index 0000000..c69467b
--- /dev/null
+++ b/opensips-c99.patch
@@ -0,0 +1,25 @@
+commit acf0c149503b034955557020ea1ad89713cded12
+Author: Razvan Crainea <razvan@opensips.org>
+Date:   Thu Feb 2 13:38:06 2023 +0200
+
+    lua: proper include for timegm
+    
+    Thanks go to Jonathan Wakely (@jwakely on GitHub) for reporting it.
+    Close #3005
+
+diff --git a/modules/lua/sipdatetime.c b/modules/lua/sipdatetime.c
+index 0febffd6aba4be47..7f3f41cc805b7443 100644
+--- a/modules/lua/sipdatetime.c
++++ b/modules/lua/sipdatetime.c
+@@ -18,9 +18,10 @@
+  */
+ 
+ #define _XOPEN_SOURCE
++#define _DEFAULT_SOURCE /* for timegm() */
++#define _BSD_SOURCE /* for timegm() */
+ #include <stdlib.h>
+ #include <string.h>
+-#define __USE_MISC /* for timegm() */
+ #include <time.h>
+ 
+ #include <lua.h>
diff --git a/opensips.spec b/opensips.spec
index aa1b85a..e16a5c3 100644
--- a/opensips.spec
+++ b/opensips.spec
@@ -5,7 +5,7 @@
 Summary:  Open Source SIP Server
 Name:     opensips
 Version:  3.3.3
-Release:  2%{?dist}
+Release:  3%{?dist}
 License:  GPLv2+
 Source0:  https://github.com/%{name}/%{name}/archive/%{version}/%{name}-%{version}.tar.gz
 # Fedora-specific patches
@@ -18,6 +18,7 @@ Patch006: opensips-0006-tm-clone-message-in-async-mode-only-in-request-route.pat
 %if 0%{?fedora} >= 34
 Patch007: opensips-0007-libcouchbase-API-v3.patch
 %endif
+Patch008: opensips-c99.patch
 
 URL:      https://opensips.org
 
@@ -1492,6 +1493,9 @@ useradd -r -g %{name} -d %{_localstatedir}/run/%{name} -s /sbin/nologin \
 
 
 %changelog
+* Sun Feb 05 2023 Florian Weimer <fweimer@redhat.com> - 3.3.3-3
+- Apply upstream patch to fix C99 compatibility issue
+
 * Thu Jan 19 2023 Fedora Release Engineering <releng@fedoraproject.org> - 3.3.3-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild