diff --git a/deps-packaging/apache/debian/rules b/deps-packaging/apache/debian/rules
index 0f8cf53e1..e9c05cd9f 100755
--- a/deps-packaging/apache/debian/rules
+++ b/deps-packaging/apache/debian/rules
@@ -14,6 +14,10 @@ build-stamp:
 	dh_testdir
 
 	patch -p0 < $(CURDIR)/apachectl.patch
+
+	# Fixed implicit declaration of GNU extension gettid() (See ENT-13084)
+	patch -p1 < $(CURDIR)/fixed-implicit-decl-gettid.patch
+
 	./configure \
 --prefix=$(PREFIX)/httpd \
 --enable-so \
diff --git a/deps-packaging/apache/fixed-implicit-decl-gettid.patch b/deps-packaging/apache/fixed-implicit-decl-gettid.patch
new file mode 100644
index 000000000..d83535339
--- /dev/null
+++ b/deps-packaging/apache/fixed-implicit-decl-gettid.patch
@@ -0,0 +1,19 @@
+diff -ruN httpd-2.4.63/server/log.c httpd-2.4.63-modified/server/log.c
+--- httpd-2.4.63/server/log.c	2024-06-21 16:31:54.000000000 +0200
++++ httpd-2.4.63-modified/server/log.c	2025-06-26 15:58:03.168415807 +0200
+@@ -633,11 +633,11 @@
+ #endif
+ #if defined(HAVE_GETTID) || defined(HAVE_SYS_GETTID)
+     if (arg && *arg == 'g') {
+-#ifdef HAVE_GETTID
+-        pid_t tid = gettid();
+-#else
++// #ifdef HAVE_GETTID
++//         pid_t tid = gettid();
++// #else
+         pid_t tid = syscall(SYS_gettid);
+-#endif
++// #endif
+         if (tid == -1)
+             return 0;
+         return apr_snprintf(buf, buflen, "%"APR_PID_T_FMT, tid);
diff --git a/deps-packaging/apache/fixed-implicit-delc-gettid.patch b/deps-packaging/apache/fixed-implicit-delc-gettid.patch
new file mode 100644
index 000000000..8655cade9
--- /dev/null
+++ b/deps-packaging/apache/fixed-implicit-delc-gettid.patch
@@ -0,0 +1,11 @@
+diff -ruN httpd-2.4.63/server/log.c httpd-2.4.63-modified/server/log.c
+--- httpd-2.4.63/server/log.c	2024-06-21 16:31:54.000000000 +0200
++++ httpd-2.4.63-modified/server/log.c	2025-06-26 12:24:42.652916219 +0200
+@@ -39,6 +39,7 @@
+ #include <stdarg.h>
+ #endif
+ #if APR_HAVE_UNISTD_H
++#define _GNU_SOURCE // gettid() used below is a GNU extension
+ #include <unistd.h>
+ #endif
+ #if APR_HAVE_PROCESS_H