diff --git a/lib/extractor/fast-extractor.nix b/lib/extractor/fast-extractor.nix
index 47553fa..f37f846 100644
--- a/lib/extractor/fast-extractor.nix
+++ b/lib/extractor/fast-extractor.nix
@@ -1 +1 @@
-(import ./default.nix).extractor-fast
+(import ./default.nix {}).extractor-fast
diff --git a/pypi-crawlers/nix/crawler/configuration.nix b/pypi-crawlers/nix/crawler/configuration.nix
index 7020b24..e581097 100644
--- a/pypi-crawlers/nix/crawler/configuration.nix
+++ b/pypi-crawlers/nix/crawler/configuration.nix
@@ -16,7 +16,7 @@ let
   };
   cd_into_updated_proj_branch = name: dir: branch: email: ''
     if [ ! -e /home/${user}/${dir} ]; then
-      git clone git@github.com:DavHau/${name}.git /home/${user}/${dir}
+      git clone --depth 1 git@github.com:DavHau/${name}.git /home/${user}/${dir}
       cd /home/${user}/${dir}
       git config user.email "${email}"
       git config user.name "DavHau-bot"
diff --git a/pypi-crawlers/nix/python.nix b/pypi-crawlers/nix/python.nix
index 08ff939..85f7815 100644
--- a/pypi-crawlers/nix/python.nix
+++ b/pypi-crawlers/nix/python.nix
@@ -1,8 +1,8 @@
 let
   mach-nix = import (builtins.fetchGit {
     url = "https://github.com/DavHau/mach-nix/";
-    ref = "2.1.0";
-  });
+    ref = "refs/tags/3.2.0";
+  }) {};
 in
 mach-nix.mkPython {
   requirements = ''