diff --git a/pkgs/tools/typesetting/tectonic/default.nix b/pkgs/tools/typesetting/tectonic/default.nix
index b6d8cb67c110..7e4c7dafefe3 100644
--- a/pkgs/tools/typesetting/tectonic/default.nix
+++ b/pkgs/tools/typesetting/tectonic/default.nix
@@ -12,10 +12,7 @@ rustPlatform.buildRustPackage rec {
     sha256 = "0dycv135bkpf71iwlwh8rwwvn287d605nl7v8mjxlrsayiivdmn9";
   };
 
-  # Delete this on next update; see #79975 for details
-  legacyCargoFetcher = true;
-
-  cargoSha256 = "0bkgh73kqcdv3j9hr3m13wrdhls3zrk7aii9shzbzl6rnp2ry1az";
+  cargoSha256 = "1axrf7d01gmhvrap13rydfvwcsg0lk1zw7z1i7zzm898bc7c02qn";
 
   nativeBuildInputs = [ pkgconfig ];