diff --git a/arithmetic.cabal b/arithmetic.cabal
--- a/arithmetic.cabal
+++ b/arithmetic.cabal
@@ -1,5 +1,5 @@
 name: arithmetic
-version: 1.5
+version: 1.6
 category: Number Theory
 synopsis: Natural number arithmetic
 license: MIT
@@ -9,23 +9,24 @@
 author: Joe Leslie-Hurd <joe@gilith.com>
 maintainer: Joe Leslie-Hurd <joe@gilith.com>
 description:
-  This package implements a library of natural number arithmetic functions,
-  including Montgomery multiplication, the Miller-Rabin primality test,
-  Lucas sequences, the Williams p+1 factorization method, continued fraction
-  representations of natural number square roots, the Jacobi symbol, the
-  Tonelli-Shanks algorithm for finding square roots modulo a prime, and
-  the Chakravala method for solving the Pell equation.
+  This package implements a library of natural number arithmetic,
+  including Montgomery multiplication, the Miller-Rabin primality
+  test, Lucas sequences, the Williams p+1 factorization method,
+  continued fraction representations of natural number square roots,
+  the Jacobi symbol, the Tonelli-Shanks algorithm for finding square
+  roots modulo a prime, and the Chakravala method for solving the Pell
+  equation.
 
 Library
   build-depends:
     base >= 4.0 && < 5.0,
-    random >= 1.0.1.1 && < 2.0,
-    QuickCheck >= 2.4.0.1 && < 3.0,
-    containers >= 0.4.2.1 && < 1.0,
-    opentheory-primitive >= 1.8 && < 2.0,
-    opentheory >= 1.0 && < 2.0,
-    opentheory-bits >= 1.0 && < 2.0,
-    opentheory-divides >= 1.0 && < 2.0
+    random >= 1.0.1.1,
+    QuickCheck >= 2.4.0.1,
+    containers >= 0.4.2.1,
+    opentheory-primitive >= 1.8,
+    opentheory >= 1.0,
+    opentheory-bits >= 1.0,
+    opentheory-divides >= 1.0
   hs-source-dirs: src
   ghc-options: -Wall
   exposed-modules:
@@ -48,13 +49,13 @@
 executable arithmetic
   build-depends:
     base >= 4.0 && < 5.0,
-    random >= 1.0.1.1 && < 2.0,
-    QuickCheck >= 2.4.0.1 && < 3.0,
-    containers >= 0.4.2.1 && < 1.0,
-    opentheory-primitive >= 1.8 && < 2.0,
-    opentheory >= 1.0 && < 2.0,
-    opentheory-bits >= 1.0 && < 2.0,
-    opentheory-divides >= 1.0 && < 2.0
+    random >= 1.0.1.1,
+    QuickCheck >= 2.4.0.1,
+    containers >= 0.4.2.1,
+    opentheory-primitive >= 1.8,
+    opentheory >= 1.0,
+    opentheory-bits >= 1.0,
+    opentheory-divides >= 1.0
   hs-source-dirs: src
   ghc-options: -Wall
   main-is: Main.hs
@@ -63,14 +64,18 @@
   type: exitcode-stdio-1.0
   build-depends:
     base >= 4.0 && < 5.0,
-    random >= 1.0.1.1 && < 2.0,
-    QuickCheck >= 2.4.0.1 && < 3.0,
-    containers >= 0.4.2.1 && < 1.0,
-    opentheory-primitive >= 1.8 && < 2.0,
-    opentheory >= 1.0 && < 2.0,
-    opentheory-bits >= 1.0 && < 2.0,
-    opentheory-divides >= 1.0 && < 2.0,
-    opentheory-prime >= 1.0 && < 2.0
+    random >= 1.0.1.1,
+    QuickCheck >= 2.4.0.1,
+    containers >= 0.4.2.1,
+    opentheory-primitive >= 1.8,
+    opentheory >= 1.0,
+    opentheory-bits >= 1.0,
+    opentheory-divides >= 1.0,
+    opentheory-prime >= 1.0
   hs-source-dirs: src
   ghc-options: -Wall
   main-is: Test.hs
+
+source-repository head
+  type: git
+  location: git://github.com/gilith/arithmetic.git