diff --git a/REQUIRE b/REQUIRE
index 01db4890..1943236c 100644
--- a/REQUIRE
+++ b/REQUIRE
@@ -1,5 +1,5 @@
 julia 0.5
 DiffBase 0.0.3
-Compat 0.8.6
+Compat 0.19.0
 Calculus 0.2.0
 NaNMath 0.2.2
diff --git a/src/partials.jl b/src/partials.jl
index cb1ddb8c..ed6d7f37 100644
--- a/src/partials.jl
+++ b/src/partials.jl
@@ -22,7 +22,7 @@ Base.start(partials::Partials) = start(partials.values)
 Base.next(partials::Partials, i) = next(partials.values, i)
 Base.done(partials::Partials, i) = done(partials.values, i)
 
-Base.linearindexing(::Partials) = Base.LinearFast()
+@compat Base.IndexStyle(::Partials) = Base.IndexLinear()
 
 #####################
 # Generic Functions #