diff --git a/reducers.cabal b/reducers.cabal
--- a/reducers.cabal
+++ b/reducers.cabal
@@ -1,6 +1,6 @@
 name:          reducers
 category:      Data, Math, Numerical, Semigroups
-version:       0.1.6
+version:       0.1.7
 license:       BSD3
 cabal-version: >= 1.6
 license-file:  LICENSE
@@ -31,7 +31,7 @@
     fingertree             >= 0.0.1    && < 0.1,
     hashable               >= 1.1.2.1  && < 1.2,
     text                   >= 0.11.1.5 && < 0.12,
-    parallel               >= 3.1      && < 3.2,
+    parallel               >= 3.2      && < 3.3,
     unordered-containers   >= 0.1.4    && < 0.2,
     semigroups             >= 0.8      && < 0.9,
     semigroupoids          >= 1.2.2.4  && < 1.3,