diff --git a/pkgs/by-name/qu/quantlib/package.nix b/pkgs/by-name/qu/quantlib/package.nix
index 7b36c381be05..ea6872b643f9 100644
--- a/pkgs/by-name/qu/quantlib/package.nix
+++ b/pkgs/by-name/qu/quantlib/package.nix
@@ -9,7 +9,7 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "quantlib";
-  version = "1.42";
+  version = "1.42.1";
 
   outputs = [
     "out"
@@ -20,7 +20,7 @@ stdenv.mkDerivation (finalAttrs: {
     owner = "lballabio";
     repo = "QuantLib";
     rev = "v${finalAttrs.version}";
-    hash = "sha256-we+8+Te7ii0z1z9PkHkMwFuAZ6t+AYm5oc5sbme3knY=";
+    hash = "sha256-sc+CZzDNITOBSUG0ZkJEmrSLv/cr5LvLRdqD0LAfe8I=";
   };
 
   nativeBuildInputs = [ cmake ];