diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..bb13dae
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use devenv
diff --git a/.github/workflows/README.md b/.github/workflows/README.md
index 5a91f76..ccf2a26 100644
--- a/.github/workflows/README.md
+++ b/.github/workflows/README.md
@@ -6,8 +6,7 @@
   - Build and test Haskell code
 - [Draft](draft.yml)
   - Create a GH draft release with a static binary
-- [Release](release.yml)
-  - Upload the package and docs to Hackage (release candidate)
+
 
 ## Events
 
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
deleted file mode 100644
index 3f33363..0000000
--- a/.github/workflows/release.yml
+++ /dev/null
@@ -1,38 +0,0 @@
-name: Release
-on:
-  push:
-    branches:
-      - main
-jobs:
-  release:
-    name: "Release"
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-      # Workaround for issue: https://github.com/cycjimmy/semantic-release-action/issues/159
-      # Had to pin to version 14
-      - name: "Pin node version"
-        uses: actions/setup-node@v2
-        with:
-          node-version: '14'
-      # Use haskell environment to run cabal configure needed for semantic-release-hackage
-      - name: Setup Haskell
-        id: setup-haskell-cabal
-        uses: haskell-actions/setup@v2
-        with:
-          ghc-version: "9.0"
-          cabal-version: "3.8"
-      - name: Semantic Release
-        run: cabal configure --enable-tests
-      - name: Semantic Release
-        uses: cycjimmy/semantic-release-action@v4
-        with:
-          extra_plugins: |
-            @semantic-release/commit-analyzer
-            @semantic-release/release-notes-generator
-            @semantic-release/github
-            semantic-release-hackage@1.1.2
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          HACKAGE_TOKEN: ${{ secrets.HACKAGE_TOKEN }}
diff --git a/.gitignore b/.gitignore
index 80ea13d..241a9fc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,4 +17,6 @@ cabal.config
 *.hp
 .stack-work/
 .env
+.direnv/
+.devenv/
 dist-newstyle/
diff --git a/.releaserc b/.releaserc
deleted file mode 100644
index b5bfc69..0000000
--- a/.releaserc
+++ /dev/null
@@ -1,18 +0,0 @@
-{
-  "$schema": "https://json.schemastore.org/semantic-release",
-  "branches": ["main"],
-  "plugins": [
-    "@semantic-release/commit-analyzer",
-    "@semantic-release/release-notes-generator",
-    [
-      "semantic-release-hackage",
-      {
-        "packageName": "dotenv",
-        "versionPrefix": "0.",
-        "publishDocumentation": true
-      }
-    ],
-    "@semantic-release/github"
-  ],
-  "tagFormat": "v0.${version}"
-}
diff --git a/README.md b/README.md
index c3c4496..dde2c66 100644
--- a/README.md
+++ b/README.md
@@ -27,6 +27,31 @@ also install the library and executable by invoking `stack install dotenv` or
 you can download the dotenv binaries from our
 [releases](https://github.com/stackbuilders/dotenv-hs/releases) page.
 
+## Development with devenv
+
+This project includes a [devenv](https://devenv.sh/) setup for reproducible
+local development.
+
+1. Install Nix and devenv.
+2. From the project root, run:
+
+```shell
+direnv allow
+```
+
+Or, if you are not using direnv:
+
+```shell
+devenv shell
+```
+
+Inside the shell you can use the normal project commands, for example:
+
+```shell
+cabal build
+cabal test
+```
+
 ## Usage
 
 Set configuration variables in a file following the format below:
diff --git a/devenv.lock b/devenv.lock
new file mode 100644
index 0000000..58b16f0
--- /dev/null
+++ b/devenv.lock
@@ -0,0 +1,65 @@
+{
+  "nodes": {
+    "devenv": {
+      "locked": {
+        "dir": "src/modules",
+        "lastModified": 1785352168,
+        "narHash": "sha256-m/9I5Ai3+wbJuKXtwwaFLG+4Db7Pg2EUYP3ZGLsA7xU=",
+        "owner": "cachix",
+        "repo": "devenv",
+        "rev": "bf3fde552a27d5e41c52c0fcfbf258e396c995bb",
+        "type": "github"
+      },
+      "original": {
+        "dir": "src/modules",
+        "owner": "cachix",
+        "repo": "devenv",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "inputs": {
+        "nixpkgs-src": "nixpkgs-src"
+      },
+      "locked": {
+        "lastModified": 1785104946,
+        "narHash": "sha256-VLSslwCjlsICjyaUfrS7lGMypmO03fzmDAqhD85Ae84=",
+        "owner": "cachix",
+        "repo": "devenv-nixpkgs",
+        "rev": "c946ff36bf193309589932c371bd5ae6653c912e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "ref": "rolling",
+        "repo": "devenv-nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-src": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1784783405,
+        "narHash": "sha256-4IHyyLgLBdKefkljdKod4IMn023pQiDXAWJA187cmdY=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "7525d999cd850b9a488817abc89c75dc733acf17",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "devenv": "devenv",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
\ No newline at end of file
diff --git a/devenv.nix b/devenv.nix
new file mode 100644
index 0000000..567ddff
--- /dev/null
+++ b/devenv.nix
@@ -0,0 +1,21 @@
+{ pkgs, ... }:
+
+{
+  # https://devenv.sh/reference/options/
+  packages = with pkgs; [
+    cabal-install
+    ghc
+    haskell-language-server
+    hlint
+    ormolu
+    stack
+    zlib
+  ];
+
+  enterShell = ''
+    echo "dotenv-hs dev environment loaded"
+    echo "Try: cabal build && cabal test"
+  '';
+
+  languages.haskell.enable = true;
+}
diff --git a/dotenv.cabal b/dotenv.cabal
index d07697a..1232a7e 100644
--- a/dotenv.cabal
+++ b/dotenv.cabal
@@ -1,5 +1,5 @@
 name:                dotenv
-version:             0.0.0.0
+version:             0.12.0.0
 synopsis:            Loads environment variables from dotenv files
 homepage:            https://github.com/stackbuilders/dotenv-hs
 description: