diff --git a/README.md b/README.md
index a4b0040..380aa29 100644
--- a/README.md
+++ b/README.md
@@ -181,9 +181,19 @@ Following software is required to run Linux version of **KCC** and/or bare sourc
 - [raven](https://pypi.python.org/pypi/raven) 6.0.0+ (only needed for GUI)
 
 On Debian based distributions these two commands should install all needed dependencies:
-```bash
-$ sudo apt-get install python3 python3-dev python3-pip libpng-dev libjpeg-dev p7zip-full python3-pyqt5
 
+
+
+```bash
+$ sudo apt-get install -y python3 python3-dev libpng-dev libjpeg-dev p7zip-full unrar-free libgl1 python3-pyqt5 && \
+    python -m pip install --upgrade pip && \
+```
+then 
+```bash
+$ python -m pip install --upgrade -r requirements.txt
+```
+or 
+```bash
 $ pip3 install --user --upgrade pillow python-slugify psutil pyqt5 raven
 ```
 
diff --git a/requirements.txt b/requirements.txt
index 0574d24..026f92d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 PyQt5>=5.6.0
 Pillow>=5.2.0
 psutil>=5.0.0
-python-slugify>=1.2.1,<8.0.0
+python-slugify>=1.2.1
 raven>=6.0.0
 # PyQt5-tools
-mozjpeg-lossless-optimization
\ No newline at end of file
+mozjpeg-lossless-optimization>=1.1.2
\ No newline at end of file