diff --git a/Project.toml b/Project.toml
index b1bc07e..ca2aa59 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "Functors"
 uuid = "d9f16b24-f501-4c13-a1f2-28368ffc5196"
 authors = ["Mike J Innes <mike.j.innes@gmail.com>"]
-version = "0.2.6"
+version = "0.2.7"
 
 [compat]
 julia = "1"
diff --git a/src/Functors.jl b/src/Functors.jl
index 54527a3..ae09d9d 100644
--- a/src/Functors.jl
+++ b/src/Functors.jl
@@ -3,5 +3,6 @@ module Functors
 export @functor, @flexiblefunctor, fmap, fmapstructure, fcollect
 
 include("functor.jl")
+include("base.jl")
 
 end # module
diff --git a/src/base.jl b/src/base.jl
new file mode 100644
index 0000000..8a90dc6
--- /dev/null
+++ b/src/base.jl
@@ -0,0 +1 @@
+@functor Base.RefValue
diff --git a/test/base.jl b/test/base.jl
new file mode 100644
index 0000000..30c4598
--- /dev/null
+++ b/test/base.jl
@@ -0,0 +1,8 @@
+@testset "Base" begin
+    @testset "RefValue" begin
+        x = Ref(1)
+        p, re = Functors.functor(x)
+        @test p == (x = 1,)
+        @test re(p) isa Base.RefValue{Int}
+    end
+end
diff --git a/test/basics.jl b/test/basics.jl
index 9d1ce76..21aa445 100644
--- a/test/basics.jl
+++ b/test/basics.jl
@@ -1,5 +1,3 @@
-using Functors, Test
-
 struct Foo
   x
   y
diff --git a/test/runtests.jl b/test/runtests.jl
index d824e63..4ccc029 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -3,5 +3,6 @@ using Functors, Test
 @testset "Functors.jl" begin
 
 include("basics.jl")
+include("base.jl")
 
 end