diff --git a/pkgs/development/libraries/libngspice/default.nix b/pkgs/development/libraries/libngspice/default.nix
index 5a34910924ce..87382bd1ae21 100644
--- a/pkgs/development/libraries/libngspice/default.nix
+++ b/pkgs/development/libraries/libngspice/default.nix
@@ -3,11 +3,11 @@
 # Note that this does not provide the ngspice command-line utility. For that see
 # the ngspice derivation.
 stdenv.mkDerivation {
-  name = "libngspice-28";
+  name = "libngspice-29";
 
   src = fetchurl {
-    url = "mirror://sourceforge/ngspice/ngspice-28.tar.gz";
-    sha256 = "0rnz2rdgyav16w7wfn3sfrk2lwvvgz1fh0l9107zkcldijklz04l";
+    url = "mirror://sourceforge/ngspice/ngspice-29.tar.gz";
+    sha256 = "0jjwz73naq7l9yhwdqbpnrfckywp2ffkppivxjv8w92zq7xhyvcd";
   };
 
   nativeBuildInputs = [ flex bison ];
@@ -18,7 +18,7 @@ stdenv.mkDerivation {
   meta = with stdenv.lib; {
     description = "The Next Generation Spice (Electronic Circuit Simulator)";
     homepage = http://ngspice.sourceforge.net;
-    license = with licenses; [ "BSD" gpl2 ];
+    license = with licenses; [ bsd3 gpl2Plus lgpl2Plus ]; # See https://sourceforge.net/p/ngspice/ngspice/ci/master/tree/COPYING
     maintainers = with maintainers; [ bgamari ];
     platforms = platforms.linux;
   };