diff --git a/pkgs/by-name/ep/epsonscan2/gcc14.patch b/pkgs/by-name/ep/epsonscan2/gcc14.patch
new file mode 100644
index 000000000000..803977574d0a
--- /dev/null
+++ b/pkgs/by-name/ep/epsonscan2/gcc14.patch
@@ -0,0 +1,37 @@
+diff --git a/thirdparty/zlib/gzlib.c b/thirdparty/zlib/gzlib.c
+index 4105e6a..eae3a38 100644
+--- a/thirdparty/zlib/gzlib.c
++++ b/thirdparty/zlib/gzlib.c
+@@ -3,6 +3,7 @@
+  * For conditions of distribution and use, see copyright notice in zlib.h
+  */
+ 
++#include <unistd.h>
+ #include "gzguts.h"
+ 
+ #if defined(_WIN32) && !defined(__BORLANDC__) && !defined(__MINGW32__)
+diff --git a/thirdparty/zlib/gzread.c b/thirdparty/zlib/gzread.c
+index 956b91e..66089b6 100644
+--- a/thirdparty/zlib/gzread.c
++++ b/thirdparty/zlib/gzread.c
+@@ -3,6 +3,7 @@
+  * For conditions of distribution and use, see copyright notice in zlib.h
+  */
+ 
++#include <unistd.h>
+ #include "gzguts.h"
+ 
+ /* Local functions */
+diff --git a/thirdparty/zlib/gzwrite.c b/thirdparty/zlib/gzwrite.c
+index c7b5651..e685f3e 100644
+--- a/thirdparty/zlib/gzwrite.c
++++ b/thirdparty/zlib/gzwrite.c
+@@ -3,6 +3,7 @@
+  * For conditions of distribution and use, see copyright notice in zlib.h
+  */
+ 
++#include <unistd.h>
+ #include "gzguts.h"
+ 
+ /* Local functions */
+ 
\ No newline at end of file
diff --git a/pkgs/by-name/ep/epsonscan2/package.nix b/pkgs/by-name/ep/epsonscan2/package.nix
index 9a9320fc9431..e94bc1f90bd6 100644
--- a/pkgs/by-name/ep/epsonscan2/package.nix
+++ b/pkgs/by-name/ep/epsonscan2/package.nix
@@ -49,16 +49,17 @@ stdenv.mkDerivation {
 
   patches = [
     ./build.patch
+    ./gcc14.patch
     (fetchpatch {
-      url = "https://raw.githubusercontent.com/flathub/net.epson.epsonscan2/master/patches/0002-Fix-crash.patch";
+      url = "https://raw.githubusercontent.com/flathub/net.epson.epsonscan2/a489ac2f8cbd03afeda86673930cc17663c31a53/patches/0002-Fix-crash.patch";
       hash = "sha256-rNsFnHq//CJcIZl0M6RLRkIY3YhnJZbikO8SeeC2ktg=";
     })
     (fetchpatch {
-      url = "https://raw.githubusercontent.com/flathub/net.epson.epsonscan2/master/patches/0004-Fix-a-crash-on-an-OOB-container-access.patch";
+      url = "https://raw.githubusercontent.com/flathub/net.epson.epsonscan2/a489ac2f8cbd03afeda86673930cc17663c31a53/patches/0004-Fix-a-crash-on-an-OOB-container-access.patch";
       hash = "sha256-WmA8pmPSJ1xUdeBbE8Jzi6w9p96aIOm0erF3T4EQ6VA=";
     })
     (fetchpatch {
-      url = "https://raw.githubusercontent.com/flathub/net.epson.epsonscan2/master/patches/0003-Use-XDG-open-to-open-the-directory.patch";
+      url = "https://raw.githubusercontent.com/flathub/net.epson.epsonscan2/a489ac2f8cbd03afeda86673930cc17663c31a53/patches/0003-Use-XDG-open-to-open-the-directory.patch";
       hash = "sha256-H3lle1SXkkpbBkozYEwiX0z9oTUubTpB+l91utxH03M=";
     })
   ];