diff --git a/basis/compression/run-length/run-length.factor b/basis/compression/run-length/run-length.factor
index cde2a7e113..ce25cd6a63 100644
--- a/basis/compression/run-length/run-length.factor
+++ b/basis/compression/run-length/run-length.factor
@@ -1,7 +1,7 @@
 ! Copyright (C) 2009 Doug Coleman.
 ! See http://factorcode.org/license.txt for BSD license.
 USING: accessors arrays combinators grouping kernel locals math
-math.matrices math.order multiline sequence-parser sequences
+math.matrices math.order multiline sequences.parser sequences
 tools.continuations ;
 IN: compression.run-length
 
diff --git a/basis/sequences/parser/authors.txt b/basis/sequences/parser/authors.txt
new file mode 100644
index 0000000000..a07c427c98
--- /dev/null
+++ b/basis/sequences/parser/authors.txt
@@ -0,0 +1,2 @@
+Daniel Ehrenberg
+Doug Coleman
diff --git a/extra/sequence-parser/sequence-parser-tests.factor b/basis/sequences/parser/parser-tests.factor
similarity index 98%
rename from extra/sequence-parser/sequence-parser-tests.factor
rename to basis/sequences/parser/parser-tests.factor
index af13e5b86e..f788a6da6a 100644
--- a/extra/sequence-parser/sequence-parser-tests.factor
+++ b/basis/sequences/parser/parser-tests.factor
@@ -1,6 +1,6 @@
 USING: tools.test sequence-parser unicode.categories kernel
 accessors ;
-IN: sequence-parser.tests
+IN: sequences.parser.tests
 
 [ "hello" ]
 [ "hello" [ take-rest ] parse-sequence ] unit-test
diff --git a/extra/sequence-parser/sequence-parser.factor b/basis/sequences/parser/parser.factor
similarity index 99%
rename from extra/sequence-parser/sequence-parser.factor
rename to basis/sequences/parser/parser.factor
index d14a77057f..93bbbdf53d 100644
--- a/extra/sequence-parser/sequence-parser.factor
+++ b/basis/sequences/parser/parser.factor
@@ -3,7 +3,7 @@
 USING: accessors circular combinators.short-circuit fry io
 kernel locals math math.order sequences sorting.functor
 sorting.slots unicode.categories ;
-IN: sequence-parser
+IN: sequences.parser
 
 TUPLE: sequence-parser sequence n ;
 
diff --git a/extra/c/lexer/lexer-tests.factor b/extra/c/lexer/lexer-tests.factor
index c972b8816c..082827353d 100644
--- a/extra/c/lexer/lexer-tests.factor
+++ b/extra/c/lexer/lexer-tests.factor
@@ -1,6 +1,6 @@
 ! Copyright (C) 2009 Doug Coleman.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: accessors c.lexer kernel sequence-parser tools.test ;
+USING: accessors c.lexer kernel sequences.parser tools.test ;
 IN: c.lexer.tests
 
 [ 36 ]
diff --git a/extra/c/lexer/lexer.factor b/extra/c/lexer/lexer.factor
index 962407e6ec..57894217bd 100644
--- a/extra/c/lexer/lexer.factor
+++ b/extra/c/lexer/lexer.factor
@@ -2,7 +2,7 @@
 ! See http://factorcode.org/license.txt for BSD license.
 USING: accessors combinators combinators.short-circuit
 generalizations kernel locals math.order math.ranges
-sequence-parser sequences sorting.functor sorting.slots
+sequences.parser sequences sorting.functor sorting.slots
 unicode.categories ;
 IN: c.lexer
 
diff --git a/extra/c/preprocessor/preprocessor.factor b/extra/c/preprocessor/preprocessor.factor
index 3018fa7a24..e8176c8df8 100644
--- a/extra/c/preprocessor/preprocessor.factor
+++ b/extra/c/preprocessor/preprocessor.factor
@@ -1,6 +1,6 @@
 ! Copyright (C) 2009 Doug Coleman.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: sequence-parser io io.encodings.utf8 io.files
+USING: sequences.parser io io.encodings.utf8 io.files
 io.streams.string kernel combinators accessors io.pathnames
 fry sequences arrays locals namespaces io.directories
 assocs math splitting make unicode.categories
diff --git a/extra/html/parser/parser.factor b/extra/html/parser/parser.factor
index 9fcbffd0db..8d506cda28 100644
--- a/extra/html/parser/parser.factor
+++ b/extra/html/parser/parser.factor
@@ -1,6 +1,6 @@
 ! Copyright (C) 2008 Doug Coleman.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: accessors arrays hashtables sequence-parser
+USING: accessors arrays hashtables sequences.parser
 html.parser.utils kernel namespaces sequences math
 unicode.case unicode.categories combinators.short-circuit
 quoting fry ;