diff --git a/pkgs/by-name/gn/gnome-flashback/fix-paths.patch b/pkgs/by-name/gn/gnome-flashback/fix-paths.patch
new file mode 100644
index 000000000000..f2f37d345ebb
--- /dev/null
+++ b/pkgs/by-name/gn/gnome-flashback/fix-paths.patch
@@ -0,0 +1,13 @@
+diff --git a/system-indicators/si-input-sources.c b/system-indicators/si-input-sources.c
+index f13b262..2186b76 100644
+--- a/system-indicators/si-input-sources.c
++++ b/system-indicators/si-input-sources.c
+@@ -807,7 +807,7 @@ spawn_keyboard_display (const char *description)
+   flags = G_SPAWN_SEARCH_PATH | G_SPAWN_DO_NOT_REAP_CHILD;
+   error = NULL;
+ 
+-  argv[0] = g_strdup ("tecla");
++  argv[0] = g_strdup ("@tecla@");
+   argv[1] = g_strdup (description);
+   argv[2] = NULL;
+ 
diff --git a/pkgs/by-name/gn/gnome-flashback/package.nix b/pkgs/by-name/gn/gnome-flashback/package.nix
index 5acf060c71cf..6d64cd8f16cb 100644
--- a/pkgs/by-name/gn/gnome-flashback/package.nix
+++ b/pkgs/by-name/gn/gnome-flashback/package.nix
@@ -20,7 +20,9 @@
   pkg-config,
   polkit,
   gdm,
+  replaceVars,
   systemd,
+  tecla,
   upower,
   pam,
   wrapGAppsHook3,
@@ -64,13 +66,19 @@ let
 in
 stdenv.mkDerivation (finalAttrs: {
   pname = "gnome-flashback";
-  version = "3.54.0";
+  version = "3.56.0";
 
   src = fetchurl {
     url = "mirror://gnome/sources/gnome-flashback/${lib.versions.majorMinor finalAttrs.version}/gnome-flashback-${finalAttrs.version}.tar.xz";
-    hash = "sha256-gkNa4wLNZK6xG25M0YTaj/+qzSSFFf+gIidZXDzPne4=";
+    hash = "sha256-LQ+iLzc9sIDq7w5Wk7lijN6ETyVjPVqQMTsEndlSkmA=";
   };
 
+  patches = [
+    (replaceVars ./fix-paths.patch {
+      tecla = lib.getExe tecla;
+    })
+  ];
+
   # make .desktop Execs absolute
   postPatch = ''
     patch -p0 <<END_PATCH