diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 7e93fb8..b257a81 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1,6 +1,6 @@
 # Contributing to ssh-audit
 
-We are very much open to receiving patches from the community!  To encourage participation, passing Travis tests, unit tests, etc., *is OPTIONAL*.  As long as the patch works properly, it can be merged.
+We are very much open to receiving patches from the community!  To encourage participation, passing CI tests, unit tests, etc., *is OPTIONAL*.  As long as the patch works properly, it can be merged.
 
 However, if you can submit patches that pass all of our automated tests, then you'll lighten the load for the project maintainer (who already has enough to do!).  This document describes what tests are done and what documentation is maintained.
 
@@ -9,16 +9,16 @@ However, if you can submit patches that pass all of our automated tests, then yo
 
 ## Tox Tests
 
-Tox is used to do unit testing, linting with [pylint](http://pylint.pycqa.org/en/latest/) & [flake8](https://flake8.pycqa.org/en/latest/), and static type-checking with [mypy](https://mypy.readthedocs.io/en/stable/).
+[Tox](https://tox.wiki/) is used to automate testing.  Linting is done with [pylint](http://pylint.pycqa.org/en/latest/) & [flake8](https://flake8.pycqa.org/en/latest/), and static type-checking is done with [mypy](https://mypy.readthedocs.io/en/stable/).
 
-For Ubuntu 18.04 or later, install tox with `apt install tox`, then simply run `tox` in the top-level directory.  Look for any error messages in the (verbose) output.
+For Ubuntu systems, install tox with `apt install tox`, then simply run `tox` in the top-level directory.  Look for any error messages in the (verbose) output.
 
 
 ## Docker Tests
 
 Docker is used to run ssh-audit against various real SSH servers (OpenSSH, Dropbear, and TinySSH).  The output is then diff'ed against the expected result.  Any differences result in failure.
 
-The docker tests are run with `./docker_test.sh`.  The first time it is run, it will download and compile the SSH servers; this may take awhile.  Subsequent runs, however, will take only a minute to complete, as the docker image will already be up-to-date.
+The docker tests are run with `./docker_test.sh`.
 
 
 ## Man Page