diff --git a/basis/roman/roman.factor b/basis/roman/roman.factor
index f8c7da9ab4..a645898c03 100644
--- a/basis/roman/roman.factor
+++ b/basis/roman/roman.factor
@@ -17,7 +17,7 @@ CONSTANT: roman-values
 ERROR: roman-range-error n ;
 
 : roman-range-check ( n -- n )
-    dup 1 3999 between? [ roman-range-error ] unless ;
+    dup 1 10000 between? [ roman-range-error ] unless ;
 
 : roman-digit-index ( ch -- n )
     1string roman-digits index ; inline
diff --git a/extra/project-euler/089/089-tests.factor b/extra/project-euler/089/089-tests.factor
new file mode 100644
index 0000000000..9b26b347b0
--- /dev/null
+++ b/extra/project-euler/089/089-tests.factor
@@ -0,0 +1,4 @@
+USING: project-euler.089 tools.test ;
+IN: project-euler.089.tests
+
+[ 743 ] [ euler089 ] unit-test
diff --git a/extra/project-euler/089/089.factor b/extra/project-euler/089/089.factor
new file mode 100644
index 0000000000..34b40a7aa6
--- /dev/null
+++ b/extra/project-euler/089/089.factor
@@ -0,0 +1,48 @@
+! Copyright (c) 2009 Doug Coleman.
+! See http://factorcode.org/license.txt for BSD license.
+USING: io.encodings.ascii io.files kernel math
+project-euler.common roman sequences ;
+IN: project-euler.089
+
+! http://projecteuler.net/index.php?section=problems&id=089
+
+! DESCRIPTION
+! -----------
+
+! The rules for writing Roman numerals allow for many ways of writing
+! each number (see FAQ: Roman Numerals). However, there is always a
+! "best" way of writing a particular number.
+
+! For example, the following represent all of the legitimate ways of
+! writing the number sixteen:
+
+! IIIIIIIIIIIIIIII
+! VIIIIIIIIIII
+! VVIIIIII
+! XIIIIII
+! VVVI
+! XVI
+
+! The last example being considered the most efficient, as it uses
+! the least number of numerals.
+
+! The 11K text file, roman.txt (right click and 'Save Link/Target As...'),
+! contains one thousand numbers written in valid, but not necessarily
+! minimal, Roman numerals; that is, they are arranged in descending units
+! and obey the subtractive pair rule (see FAQ for the definitive rules
+! for this problem).
+
+! Find the number of characters saved by writing each of these in their minimal form.
+
+! SOLUTION
+! --------
+
+: euler089 ( -- n )
+    "resource:extra/project-euler/089/roman.txt" ascii file-lines
+    [ ] [ [ roman> >roman ] map ] bi
+    [ [ length ] map-sum ] bi@ - ;
+
+! [ euler089 ] 100 ave-time
+! 14 ms ave run time - 0.27 SD (100 trials)
+
+SOLUTION: euler089
diff --git a/extra/project-euler/089/authors.txt b/extra/project-euler/089/authors.txt
new file mode 100644
index 0000000000..7c1b2f2279
--- /dev/null
+++ b/extra/project-euler/089/authors.txt
@@ -0,0 +1 @@
+Doug Coleman
diff --git a/extra/project-euler/089/roman.txt b/extra/project-euler/089/roman.txt
new file mode 100644
index 0000000000..721ab99915
--- /dev/null
+++ b/extra/project-euler/089/roman.txt
@@ -0,0 +1,1000 @@
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+MCLXXXXVIII
+MMMCXVI
+MCCCLX
+MMMCDX
+CCLXVIIII
+MMMCCLX
+MCXXVIII
+LXXXII
+MCCCCLXXXI
+MMMI
+MMMCCCLXIV
+MMMCCCXXVIIII
+CXXXVIII
+MMCCCXX
+MMMCCXXVIIII
+MCCLXVI
+MMMCCCCXXXXVI
+MMDCCXCIX
+MCMLXXI
+MMCCLXVIII
+CDLXXXXIII
+MMMMDCCXXII
+MMMMDCCLXXXVII
+MMMDCCLIV
+MMCCLXIII
+MDXXXVII
+DCCXXXIIII
+MCII
+MMMDCCCLXXI
+MMMLXXIII
+MDCCCLIII
+MMXXXVIII
+MDCCXVIIII
+MDCCCCXXXVII
+MMCCCXVI
+MCMXXII
+MMMCCCLVIII
+MMMMDCCCXX
+MCXXIII
+MMMDLXI
+MMMMDXXII
+MDCCCX
+MMDXCVIIII
+MMMDCCCCVIII
+MMMMDCCCCXXXXVI
+MMDCCCXXXV
+MMCXCIV
+MCMLXXXXIII
+MMMCCCLXXVI
+MMMMDCLXXXV
+CMLXIX
+DCXCII
+MMXXVIII
+MMMMCCCXXX
+XXXXVIIII
\ No newline at end of file