diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Revision history for terraform-http-backend-pass
 
+## Unreleased changes
+
+## 0.1.0.1 -- 2023-05-29
+
+* GetState: Fix existence check.
+
 ## 0.1.0.0 -- 2021-02-28
 
 * First version. Released on an unsuspecting world.
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -33,7 +33,8 @@
      ```
    - Using [nix](https://nixos.org/):
      ```bash
-     nix-env -f https://git.coop/akshay/terraform-http-backend-pass/-/archive/main/terraform-http-backend-pass-main.tar.gz -i
+     nix registry add terraform-http-backend-pass git+https://git.coop/akshay/terraform-http-backend-pass
+     nix build 'terraform-http-backend-pass#' --profile $HOME/.nix-profile
      ```
 2. Create a pass repository:
    ```bash
diff --git a/src/Terraform/HttpBackend/Pass/App.hs b/src/Terraform/HttpBackend/Pass/App.hs
--- a/src/Terraform/HttpBackend/Pass/App.hs
+++ b/src/Terraform/HttpBackend/Pass/App.hs
@@ -51,7 +51,8 @@
       Shelly.run_ "pass" ["rm", name]
   exists name = do
     Env {..} <- ask
-    liftIO $ doesFileExist (directory <> "/" <> Text.unpack name)
+    let path = directory <> "/" <> Text.unpack name <> ".gpg"
+    liftIO $ doesFileExist path
 
 runAppT :: Env -> AppT m a -> m a
 runAppT env (AppT r) = runReaderT r env
diff --git a/terraform-http-backend-pass.cabal b/terraform-http-backend-pass.cabal
--- a/terraform-http-backend-pass.cabal
+++ b/terraform-http-backend-pass.cabal
@@ -1,6 +1,6 @@
 cabal-version:       >=1.10
 name:                terraform-http-backend-pass
-version:             0.1.0.0
+version:             0.1.0.1
 license-file:        LICENSE
 license:             AGPL
 author:              Akshay Mankar