diff --git a/pkgs/applications/window-managers/sway/lock.nix b/pkgs/applications/window-managers/sway/lock.nix
index fe445a6b7adf..dcff3a5c47f6 100644
--- a/pkgs/applications/window-managers/sway/lock.nix
+++ b/pkgs/applications/window-managers/sway/lock.nix
@@ -5,17 +5,18 @@
 
 stdenv.mkDerivation rec {
   pname = "swaylock";
-  version = "1.4";
+  version = "1.5";
 
   src = fetchFromGitHub {
     owner = "swaywm";
     repo = "swaylock";
     rev = version;
-    sha256 = "1ii9ql1mxkk2z69dv6bg1x22nl3a46iww764wqjiv78x08xpk982";
+    sha256 = "0r95p4w11dwm5ra614vddz83r8j7z6gd120z2vcchy7m9b0f15kf";
   };
 
   postPatch = ''
-    sed -iE "s/version: '1\.3',/version: '${version}',/" meson.build
+    substituteInPlace meson.build \
+      --replace "version: '1.4'" "version: '${version}'"
   '';
 
   nativeBuildInputs = [ meson ninja pkgconfig scdoc ];