Update Python version requirement (#117)
Updates the minimum supported Python version to 3.8 and notes the policy
of tracking the support timeline of the Python project.
diff --git a/doc/guide.md b/doc/guide.md
index a0b0b7a..d0dd1ce 100644
--- a/doc/guide.md
+++ b/doc/guide.md
@@ -24,9 +24,11 @@
#### Running the Emboss Compiler
-The Emboss compiler requires Python 3.6 or later. On a Linux-like system with
-Python 3 installed in the usual place (`/usr/bin/python3`), you can run the
-embossc script at the top level on an `.emb` file to generate C++, like so:
+The Emboss compiler requires Python 3.8 or later -- the minimum supported
+version tracks the support timeline of the Python project. On a Linux-like
+system with Python 3 installed in the usual place (`/usr/bin/python3`), you
+can run the embossc script at the top level on an `.emb` file to generate
+C++, like so:
```
embossc --generate cc --output-path path/to/object/dir path/to/input.emb
