diff --git a/docs/requirements.txt b/docs/requirements.txt
index e08d2075..edf8077c 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,3 +1,3 @@
-breathe
+breathe==4.33.1
 furo<=2021.10.09
-sphinxcontrib-plantuml
\ No newline at end of file
+sphinxcontrib-plantuml==0.22
diff --git a/docs/source/installation.rst b/docs/source/installation.rst
index 8d2c1975..51ca67bb 100644
--- a/docs/source/installation.rst
+++ b/docs/source/installation.rst
@@ -159,9 +159,7 @@ To enable plantuml from anywhere in your file structure add the following line t
 
 .. code-block::
 
-    echo alias plantuml="'java -jar /home/<username>/java/plantuml.jar'" >> /home/<username>/.bashrc
-
-Where you replace ``<username>`` with your username. For example I would write ``/home/charlie/java/plantuml.jar``.
+    echo alias plantuml="'java -jar ~/java/plantuml.jar'" >> ~/.bashrc
 
 To ensure that it is installed correctly, run ``plantuml -testdot`` and it should output something similar to:
 
@@ -195,6 +193,11 @@ Step 4 - Build Documentation
     doxygen
     make html
 
+.. note:: 
+
+        If you get an error saying that it cannot build try changing the sphinx command in the Makefile to ``python -m spinx.cmd.build``
+
+
 Step 5 - View Documentation
 ----------------------------