installation-instructions.md

@@ -97,7 +97,7 @@ deb-src http://downloads.skewed.de/apt/DISTRIBUTION DISTRIBUTION main
 where `DISTRIBUTION` can be any one of
 
 ```
-stretch, buster, sid
+buster, sid
 ```
 
 For [Ubuntu](http://www.ubuntu.com/), add the following lines
@@ -109,7 +109,7 @@ deb-src http://downloads.skewed.de/apt/DISTRIBUTION DISTRIBUTION universe
 where `DISTRIBUTION` can be any one of
 
 ```
-xenial, yakkety, zesty, artful, bionic, cosmic
+bionic, cosmic, disco
 ```
 
 After running `apt-get update`, the package can be installed with