diff --git a/.gitignore b/.gitignore
index 2d62eb2..1689329 100644
--- a/.gitignore
+++ b/.gitignore
@@ -110,7 +110,7 @@ MANIFEST
 #  Usually these files are written by a python script from a template
 #  before PyInstaller builds the exe, so as to inject date/other infos into it.
 *.manifest
-*.spec
+#*.spec
 
 # Installer logs
 pip-log.txt
diff --git a/DHLCropper.spec b/DHLCropper.spec
new file mode 100644
index 0000000..b79c9f2
--- /dev/null
+++ b/DHLCropper.spec
@@ -0,0 +1,49 @@
+# -*- mode: python ; coding: utf-8 -*-
+from PyInstaller.utils.hooks import copy_metadata
+
+datas = []
+datas += copy_metadata('pikepdf')
+datas += copy_metadata('dhlcropper')
+
+
+block_cipher = None
+
+
+a = Analysis(
+    ['dhlcropper/main.py'],
+    pathex=[],
+    binaries=[],
+    datas=datas,
+    hiddenimports=[],
+    hookspath=[],
+    hooksconfig={},
+    runtime_hooks=[],
+    excludes=[],
+    win_no_prefer_redirects=False,
+    win_private_assemblies=False,
+    cipher=block_cipher,
+    noarchive=False,
+)
+pyz = PYZ(a.pure, a.zipped_data, cipher=block_cipher)
+
+exe = EXE(
+    pyz,
+    a.scripts,
+    a.binaries,
+    a.zipfiles,
+    a.datas,
+    [],
+    name='DHLCropper',
+    debug=False,
+    bootloader_ignore_signals=False,
+    strip=False,
+    upx=True,
+    upx_exclude=[],
+    runtime_tmpdir=None,
+    console=False,
+    disable_windowed_traceback=False,
+    argv_emulation=False,
+    target_arch=None,
+    codesign_identity=None,
+    entitlements_file=None,
+)
diff --git a/build.sh b/build.sh
index f3e0424..5319ed9 100755
--- a/build.sh
+++ b/build.sh
@@ -1,3 +1,3 @@
 #!/usr/bin/env bash
 poetry install
-poetry run pyinstaller -F --copy-metadata pikepdf --copy-metadata dhlcropper dhlcropper/main.py
\ No newline at end of file
+poetry run pyinstaller --log-level=WARN --clean DHLCropper.spec
\ No newline at end of file
diff --git a/makespec.sh b/makespec.sh
new file mode 100755
index 0000000..fa76d58
--- /dev/null
+++ b/makespec.sh
@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+poetry install
+poetry run pyi-makespec \
+  --onefile \
+  --copy-metadata pikepdf \
+  --copy-metadata dhlcropper \
+  --name DHLCropper \
+  --noconsole \
+  --log-level=WARN \
+  dhlcropper/main.py
\ No newline at end of file