diff --git a/saturn.cabal b/saturn.cabal
index f8bcaad..43887cb 100644
--- a/saturn.cabal
+++ b/saturn.cabal
@@ -49,7 +49,7 @@ library
     hspec ^>=2.11.8,
     parsec ^>=3.1.16.1,
     text ^>={2.0.2, 2.1},
-    time ^>={1.12.2, 1.14},
+    time ^>={1.12.2, 1.14, 1.15},
 
   -- cabal-gild: discover source/library
   exposed-modules: