diff --git a/flake.nix b/flake.nix
index c7e2623..091ac32 100644
--- a/flake.nix
+++ b/flake.nix
@@ -96,14 +96,6 @@
             XDG_CACHE_HOME = typstPackagesCache;
 
             SOURCE_DATE_EPOCH = builtins.toString self.lastModified;
-
-            preBuild =
-              if (self ? rev) then
-                ''
-                  echo ${self.rev} >> .rev
-                ''
-              else
-                "";
           }
         );