diff --git a/.goreleaser.yaml b/.goreleaser.yaml
index 0ad08ea..ac716c4 100644
--- a/.goreleaser.yaml
+++ b/.goreleaser.yaml
@@ -32,7 +32,7 @@ builds:
       - -X github.com/f1bonacc1/process-compose/src/config.Version={{.Tag}}
       - -X github.com/f1bonacc1/process-compose/src/config.CheckForUpdates=true
       - -X github.com/f1bonacc1/process-compose/src/config.Commit={{.ShortCommit}}
-      - -X github.com/f1bonacc1/process-compose/src/config.Date={{.Date}}
+      - -X github.com/f1bonacc1/process-compose/src/config.Date={{.CommitDate}}
       - -s -w
 archives:
   - replacements:
diff --git a/Makefile b/Makefile
index 4a1323f..80eb486 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@ NAME=process-compose
 RM=rm
 VERSION = $(shell git describe --abbrev=0)
 GIT_REV    ?= $(shell git rev-parse --short HEAD)
-DATE       ?= $(shell date -u +"%Y-%m-%dT%H:%M:%SZ")
+DATE       ?= $(shell TZ=UTC0 git show --quiet --date='format-local:%Y-%m-%dT%H:%M:%SZ' --format="%cd")
 NUMVER = $(shell echo ${VERSION} | cut -d"v" -f 2)
 PKG = github.com/f1bonacc1/${NAME}
 SHELL := /bin/bash
diff --git a/default.nix b/default.nix
index 2ae456b..288d08d 100644
--- a/default.nix
+++ b/default.nix
@@ -1,11 +1,13 @@
 { buildGoModule, config, lib, pkgs, installShellFiles, date, commit }:
 
+let pkg = "github.com/f1bonacc1/process-compose/src/config";
+in
 buildGoModule rec {
   pname = "process-compose";
   version = "0.29.1";
-  pkg = "github.com/f1bonacc1/process-compose/src/config";
 
-  src = ./.;
+
+  src = lib.cleanSource ./.;
   ldflags = [
     "-X ${pkg}.Version=v${version}"
     "-X ${pkg}.Date=${date}"
diff --git a/flake.lock b/flake.lock
index d7d454d..9111c10 100644
--- a/flake.lock
+++ b/flake.lock
@@ -17,16 +17,18 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1666837999,
-        "narHash": "sha256-hI7+s1UVDsJNqNn9UGV6xTBGqMC4dqOyVpeDf+su7JU=",
+        "lastModified": 1671971468,
+        "narHash": "sha256-dbToieyk3ym62lpO1ZZSPN+az/sBMmP05VAJcbb5PkM=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "1c6eb4876f71e8903ae9f73e6adf45fdbebc0292",
+        "rev": "266927206388a73cb3dcfdc9bce73a381e3e1faf",
         "type": "github"
       },
       "original": {
-        "id": "nixpkgs",
-        "type": "indirect"
+        "owner": "NixOS",
+        "ref": "release-22.11",
+        "repo": "nixpkgs",
+        "type": "github"
       }
     },
     "root": {
diff --git a/flake.nix b/flake.nix
index 5f68924..9754a4f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -3,7 +3,7 @@
     "Process Compose is like docker-compose, but for orchestrating a suite of processes, not containers.";
 
   # Nixpkgs / NixOS version to use.
-  inputs.nixpkgs.url = "nixpkgs";
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/release-22.11";
   inputs.flake-utils.url = "github:numtide/flake-utils";
 
   outputs = { self, nixpkgs, flake-utils }: