diff --git a/requirements.txt b/requirements.txt
index e207789..becc2ff 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,31 +1,31 @@
-Adafruit-Thermal==1.1.0
-appdirs==1.4.4
-argcomplete==2.0.0
-click==8.1.3
-commonmark==0.9.1
-Deprecated==1.2.13
-escpos==1.9
-Flask==2.1.2
-Flask-Limiter==2.4.5.1
-future==0.18.2
-itsdangerous==2.1.2
-Jinja2==3.1.2
-limits==2.6.1
-MarkupSafe==2.1.1
-packaging==21.3
-Pillow==9.1.0
-Pygments==2.12.0
-pyparsing==3.0.8
-pyserial==3.5
-python-barcode==0.13.1
-pyusb==1.2.1
-PyYAML==6.0
-qrcode==7.3.1
-rich==12.4.1
-six==1.16.0
-toml==0.10.2
-typing_extensions==4.2.0
-Unidecode==1.3.4
-viivakoodi==0.8.0
-Werkzeug==2.1.2
-wrapt==1.14.1
+Adafruit-Thermal~=1.1.0
+appdirs~=1.4.4
+argcomplete~=2.0.0
+click~=8.1.3
+commonmark~=0.9.1
+Deprecated~=1.2.13
+escpos~=1.9
+Flask~=2.1.2
+Flask-Limiter~=2.4.5.1
+future~=0.18.2
+itsdangerous~=2.1.2
+Jinja2~=3.1.2
+limits~=2.6.1
+MarkupSafe~=2.1.1
+packaging~=21.3
+Pillow~=9.1.0
+Pygments~=2.12.0
+pyparsing~=3.0.8
+pyserial~=3.5
+python-barcode~=0.13.1
+pyusb~=1.2.1
+PyYAML~=6.0
+qrcode~=7.3.1
+rich~=12.4.1
+six~=1.16.0
+toml~=0.10.2
+typing_extensions~=4.2.0
+Unidecode~=1.3.4
+viivakoodi~=0.8.0
+Werkzeug~=2.1.2
+wrapt~=1.14.1