diff --git a/extra/regexp/authors.txt b/extra/parser-combinators/regexp/authors.txt
similarity index 100%
rename from extra/regexp/authors.txt
rename to extra/parser-combinators/regexp/authors.txt
diff --git a/extra/regexp/regexp-tests.factor b/extra/parser-combinators/regexp/regexp-tests.factor
similarity index 99%
rename from extra/regexp/regexp-tests.factor
rename to extra/parser-combinators/regexp/regexp-tests.factor
index e9433c6c64..64feb0903c 100755
--- a/extra/regexp/regexp-tests.factor
+++ b/extra/parser-combinators/regexp/regexp-tests.factor
@@ -1,5 +1,5 @@
 USING: regexp tools.test kernel ;
-IN: regexp-tests
+IN: parser-combinators.regexp.tests
 
 [ f ] [ "b" "a*" f <regexp> matches? ] unit-test
 [ t ] [ "" "a*" f <regexp> matches? ] unit-test
diff --git a/extra/regexp/regexp.factor b/extra/parser-combinators/regexp/regexp.factor
similarity index 99%
rename from extra/regexp/regexp.factor
rename to extra/parser-combinators/regexp/regexp.factor
index 5ef3eacc6c..40d4603fb6 100755
--- a/extra/regexp/regexp.factor
+++ b/extra/parser-combinators/regexp/regexp.factor
@@ -3,7 +3,7 @@ namespaces parser lexer parser-combinators parser-combinators.simple
 promises quotations sequences combinators.lib strings math.order
 assocs prettyprint.backend memoize unicode.case unicode.categories
 combinators.short-circuit accessors make io ;
-IN: regexp
+IN: parser-combinators.regexp
 
 <PRIVATE
 
diff --git a/extra/regexp/summary.txt b/extra/parser-combinators/regexp/summary.txt
similarity index 100%
rename from extra/regexp/summary.txt
rename to extra/parser-combinators/regexp/summary.txt
diff --git a/extra/regexp/tags.txt b/extra/parser-combinators/regexp/tags.txt
similarity index 100%
rename from extra/regexp/tags.txt
rename to extra/parser-combinators/regexp/tags.txt