diff --git a/flake.nix b/flake.nix
index cfa201b764752a479c041e37fea7eff23305c7e5..607fa8937c547afeb143cebc7d495c3f8ae7ae78 100644
--- a/flake.nix
+++ b/flake.nix
@@ -25,7 +25,7 @@
       flake = false;
     };
     doctest = {
-      url = "github:parsonsmatt/doctest/a5f696b80bb8220d284e34d90f0b94291b859e77";
+      url = "github:sol/doctest/4eb97c213acf7abe965a3a1b67397199ed155f3c";
       flake = false;
     };
     double-conversion = {