diff --git a/pkgs/applications/science/math/pynac/default.nix b/pkgs/applications/science/math/pynac/default.nix
index 05c0c0e8ec62..4022383dbc7d 100644
--- a/pkgs/applications/science/math/pynac/default.nix
+++ b/pkgs/applications/science/math/pynac/default.nix
@@ -9,14 +9,14 @@
 }:
 
 stdenv.mkDerivation rec {
-  version = "0.7.25";
+  version = "0.7.26";
   pname = "pynac";
 
   src = fetchFromGitHub {
     owner = "pynac";
     repo = "pynac";
     rev = "pynac-${version}";
-    sha256 = "0nnifvg6kzx0lq6gz7znind8g30v3d2pjfwgsdiks3vv9kv9nbj3";
+    sha256 = "09d2p74x1arkydlxy6pw4p4byi7r8q7f29w373h4d8a215kadc6d";
   };
 
   buildInputs = [