diff --git a/docs/Users_Guide/installation.rst b/docs/Users_Guide/installation.rst
index a19f884b..3f526024 100644
--- a/docs/Users_Guide/installation.rst
+++ b/docs/Users_Guide/installation.rst
@@ -8,6 +8,7 @@ are used by METviewer, METplotpy, and other applications.
 Python Requirements
 ===================
 
+.. highlight:: bash
 .. literalinclude:: ../../requirements.txt
 
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