diff --git a/pkgs/development/octave-modules/signal/default.nix b/pkgs/development/octave-modules/signal/default.nix
index 2579efc51889..0c4c2d9c6e23 100644
--- a/pkgs/development/octave-modules/signal/default.nix
+++ b/pkgs/development/octave-modules/signal/default.nix
@@ -6,11 +6,11 @@
 
 buildOctavePackage rec {
   pname = "signal";
-  version = "1.4.3";
+  version = "1.4.5";
 
   src = fetchurl {
     url = "mirror://sourceforge/octave/${pname}-${version}.tar.gz";
-    sha256 = "sha256-VFuXVA6+ujtCDwiQb905d/wpOzvI/Db2uosJTOqI8zk=";
+    sha256 = "sha256-VVreL/gPcRiQk5XDNAXwoXpPvNIrxtL7nD9/Rf72SOc=";
   };
 
   requiredOctavePackages = [