diff --git a/flake.nix b/flake.nix
index c4972c29..e3246399 100644
--- a/flake.nix
+++ b/flake.nix
@@ -94,6 +94,16 @@
                       url = "https://git.xenia.me.uk/xenia/nixos.git?ref=main";
                     };
                   };
+                  pyenv = {
+                    from = {
+                      type = "indirect";
+                      id = "pyenv";
+                    };
+                    to = {
+                      type = "git";
+                      url = "https://git.xenia.me.uk/utils/pyenv.git";
+                    };
+                  };
                   jupyter = {
                     from = {
                       type = "indirect";