diff --git a/ch05/hparam_tuning/hparam_search.py b/ch05/02_hparam_tuning/hparam_search.py
similarity index 100%
rename from ch05/hparam_tuning/hparam_search.py
rename to ch05/02_hparam_tuning/hparam_search.py
diff --git a/ch05/hparam_tuning/previous_chapters.py b/ch05/02_hparam_tuning/previous_chapters.py
similarity index 100%
rename from ch05/hparam_tuning/previous_chapters.py
rename to ch05/02_hparam_tuning/previous_chapters.py
diff --git a/ch05/hparam_tuning/the-verdict.txt b/ch05/02_hparam_tuning/the-verdict.txt
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rename from ch05/hparam_tuning/the-verdict.txt
rename to ch05/02_hparam_tuning/the-verdict.txt