diff --git a/unmaintained/golden-section/authors.txt b/extra/golden-section/authors.txt
similarity index 100%
rename from unmaintained/golden-section/authors.txt
rename to extra/golden-section/authors.txt
diff --git a/unmaintained/golden-section/deploy.factor b/extra/golden-section/deploy.factor
similarity index 100%
rename from unmaintained/golden-section/deploy.factor
rename to extra/golden-section/deploy.factor
diff --git a/unmaintained/golden-section/golden-section.factor b/extra/golden-section/golden-section.factor
similarity index 100%
rename from unmaintained/golden-section/golden-section.factor
rename to extra/golden-section/golden-section.factor
diff --git a/unmaintained/golden-section/summary.txt b/extra/golden-section/summary.txt
similarity index 100%
rename from unmaintained/golden-section/summary.txt
rename to extra/golden-section/summary.txt
diff --git a/unmaintained/golden-section/tags.txt b/extra/golden-section/tags.txt
similarity index 100%
rename from unmaintained/golden-section/tags.txt
rename to extra/golden-section/tags.txt