diff --git a/pkgs/development/guile-modules/guile-json/default.nix b/pkgs/development/guile-modules/guile-json/default.nix
index dee81f2baeb..81febc3171b 100644
--- a/pkgs/development/guile-modules/guile-json/default.nix
+++ b/pkgs/development/guile-modules/guile-json/default.nix
@@ -8,11 +8,11 @@
 
 stdenv.mkDerivation rec {
   pname = "guile-json";
-  version = "4.7.2";
+  version = "4.7.3";
 
   src = fetchurl {
     url = "mirror://savannah/guile-json/${pname}-${version}.tar.gz";
-    sha256 = "sha256-lCq37FtAhWeZwMqfuBkhrxf8Q2CuvvHMjLH2rZIg1Rk=";
+    sha256 = "sha256-OLoEjtKdEvBbMsWy+3pReVxEi0HkA6Kxty/wA1gX84g=";
   };
 
   nativeBuildInputs = [