diff --git a/REQUIRE b/REQUIRE
index 131a5347..ec3f5ea3 100644
--- a/REQUIRE
+++ b/REQUIRE
@@ -1,5 +1,5 @@
 julia 0.4
-DiffBase 0.0.1
+DiffBase 0.0.3
 Compat 0.8.6
-Calculus 0.1.15
-NaNMath 0.2.1
+Calculus 0.2.0
+NaNMath 0.2.2
diff --git a/src/ForwardDiff.jl b/src/ForwardDiff.jl
index c9294129..b21b957b 100644
--- a/src/ForwardDiff.jl
+++ b/src/ForwardDiff.jl
@@ -1,4 +1,4 @@
-isdefined(Base, :__precompile__) && __precompile__()
+__precompile__()
 
 module ForwardDiff