diff --git a/debian/imlib/imlib-1.9.15/debian/changelog b/debian/imlib/imlib-1.9.15/debian/changelog
index 515d8041..edfc265b 100644
--- a/debian/imlib/imlib-1.9.15/debian/changelog
+++ b/debian/imlib/imlib-1.9.15/debian/changelog
@@ -1,3 +1,9 @@
+imlib (1.9.15-23debian13.0.0+9~a) trixie; urgency=low
+
+  * Added detection of availability GNU variant of the basename.
+
+ -- Slávek Banko <slavek.banko@axis.cz>  Sun, 14 Apr 2024 17:10:27 +0200
+
 imlib (1.9.15-23debian11.0.0+8~a) bullseye; urgency=low
 
   * Change debhelper compatibility level to 9
diff --git a/debian/imlib/imlib-1.9.15/debian/patches/check-gnu-basename.diff b/debian/imlib/imlib-1.9.15/debian/patches/check-gnu-basename.diff
new file mode 100644
index 00000000..c636bac0
--- /dev/null
+++ b/debian/imlib/imlib-1.9.15/debian/patches/check-gnu-basename.diff
@@ -0,0 +1,46 @@
+Index: imlib-1.9.15/Imlib/colors.c
+===================================================================
+--- imlib-1.9.15.orig/Imlib/colors.c
++++ imlib-1.9.15/Imlib/colors.c
+@@ -3,8 +3,10 @@
+ #include "Imlib.h"
+ #include "Imlib_private.h"
+ 
+-#ifndef HAVE_BASENAME
++#if defined(HAVE_GNU_BASENAME)
+ #include <string.h>
++#elif defined(HAVE_BASENAME)
++#include <libgen.h>
+ #endif
+ 
+ #ifdef __EMX__
+Index: imlib-1.9.15/config.h.in
+===================================================================
+--- imlib-1.9.15.orig/config.h.in
++++ imlib-1.9.15/config.h.in
+@@ -19,6 +19,9 @@
+ /* Define to 1 if you have the <dlfcn.h> header file. */
+ #undef HAVE_DLFCN_H
+ 
++/* Defined if we hare GNU version of basename */
++#undef HAVE_GNU_BASENAME
++
+ /* Define to 1 if you have the <inttypes.h> header file. */
+ #undef HAVE_INTTYPES_H
+ 
+Index: imlib-1.9.15/configure.in
+===================================================================
+--- imlib-1.9.15.orig/configure.in
++++ imlib-1.9.15/configure.in
+@@ -101,6 +101,11 @@ AC_TYPE_SIGNAL
+ AC_CHECK_FUNCS(vsnprintf)
+ AC_CHECK_FUNCS(snprintf)
+ AC_CHECK_FUNCS(basename)
++AC_CHECK_DECL([basename(char*)], AC_DEFINE(HAVE_GNU_BASENAME, 1, [Defined if we hare GNU version of basename]), [], [
++#define _GNU_SOURCE
++#include <string.h>
++])
++
+ 
+ AC_CHECK_FUNCS(blumfrub)
+ AC_CHECK_FUNCS(buckets_of_erogenous_nym)
diff --git a/debian/imlib/imlib-1.9.15/debian/patches/series b/debian/imlib/imlib-1.9.15/debian/patches/series
index e01a55f6..3f214e7d 100644
--- a/debian/imlib/imlib-1.9.15/debian/patches/series
+++ b/debian/imlib/imlib-1.9.15/debian/patches/series
@@ -17,3 +17,4 @@ png1.5.diff
 png1.6.diff
 giflib5.1.diff
 fix-potential-buffer-overflow.diff
+check-gnu-basename.diff