diff --git a/default.nix b/default.nix
index bf1f569..9b6967a 100644
--- a/default.nix
+++ b/default.nix
@@ -14,7 +14,7 @@ let
     args = {
       inherit pkgs;
       name = "default";
-      k8s = { inherit loadJSON loadYAML toBase64 mkValueOrSecretOption; };
+      k8s = { inherit loadJSON loadYAML toBase64 octalToDecimal mkValueOrSecretOption; };
     };
   };
 
diff --git a/lib.nix b/lib.nix
index 876aa78..1661f82 100644
--- a/lib.nix
+++ b/lib.nix
@@ -30,6 +30,14 @@ rec {
     builtins.readFile
       (pkgs.runCommand "value-to-b64" {} "echo '${value}' | ${pkgs.coreutils}/bin/base64 -w0 > $out");
 
+  exp = base: exp: foldr (value: acc: acc * base) 1 (range 1 exp);
+
+  octalToDecimal = value:
+    (foldr (char: acc: {
+      i = acc.i + 1;
+      value = acc.value + (toInt char) * (exp 8 acc.i);
+    }) {i = 0; value = 0;} (stringToCharacters value)).value;
+
   mkValueOrSecretOption = {...}@options: mkOption ({
     type = types.nullOr (types.either types.str (types.submodule {
       options.secret = mkOption {