diff --git a/.travis.yml b/.travis.yml
index 9dc2f64..17fa7ed 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,7 +3,7 @@ os:
   - linux
   - osx
 julia:
-  - 0.4
+  - 0.5
   - nightly
 notifications:
   email: false
diff --git a/REQUIRE b/REQUIRE
index 37e551a..0263fa1 100644
--- a/REQUIRE
+++ b/REQUIRE
@@ -1,4 +1,4 @@
-julia 0.4
+julia 0.5
 Clp
 Cbc
 Ipopt
diff --git a/appveyor.yml b/appveyor.yml
index 194d764..f02e04b 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,7 +1,7 @@
 environment:
   matrix:
-  - JULIAVERSION: "julialang/bin/winnt/x86/0.4/julia-0.4-latest-win32.exe"
-  - JULIAVERSION: "julialang/bin/winnt/x64/0.4/julia-0.4-latest-win64.exe"
+  - JULIAVERSION: "julialang/bin/winnt/x86/0.5/julia-0.5-latest-win32.exe"
+  - JULIAVERSION: "julialang/bin/winnt/x64/0.5/julia-0.5-latest-win64.exe"
   - JULIAVERSION: "julianightlies/bin/winnt/x86/julia-latest-win32.exe"
   - JULIAVERSION: "julianightlies/bin/winnt/x64/julia-latest-win64.exe"
 
diff --git a/deps/build.jl b/deps/build.jl
index b6d05ad..1471ff6 100644
--- a/deps/build.jl
+++ b/deps/build.jl
@@ -8,14 +8,14 @@ version = "2.9.2"
 provides(Sources, URI("http://www.coin-or.org/download/source/OS/OS-$version.tgz"),
     [libOS], os = :Unix)
 
-@windows_only begin
+@static if is_windows()
     using WinRPM
     push!(WinRPM.sources, "http://download.opensuse.org/repositories/home:/kelman:/mingw-coinor/openSUSE_13.2")
     WinRPM.update()
     provides(WinRPM.RPM, "OptimizationServices", [libOS], os = :Windows)
 end
 
-@osx_only begin
+@static if is_apple()
     using Homebrew
     provides(Homebrew.HB, "Optimizationservices", [libOS], os = :Darwin)
 end
@@ -33,8 +33,10 @@ patchdir = BinDeps.depsdir(libOS)
 builddir = joinpath(BinDeps.depsdir(libOS), "src", "OS-$version", "build")
 
 ENV2 = copy(ENV)
-@unix_only ENV2["PKG_CONFIG_PATH"] = string(joinpath(cbclibdir, "pkgconfig"),
+@static if is_unix()
+    ENV2["PKG_CONFIG_PATH"] = string(joinpath(cbclibdir, "pkgconfig"),
     ":", joinpath(ipoptlibdir, "pkgconfig"))
+end
 cbcincdir = joinpath(cbclibdir, "..", "include", "coin")
 
 provides(SimpleBuild,
diff --git a/src/CoinOptServices.jl b/src/CoinOptServices.jl
index 4304bec..51f2cb2 100644
--- a/src/CoinOptServices.jl
+++ b/src/CoinOptServices.jl
@@ -26,10 +26,10 @@ osildir = Pkg.dir("CoinOptServices", ".osil")
 
 export OsilSolver, OsilBonminSolver, OsilCouenneSolver, OSOption
 immutable OsilSolver <: AbstractMathProgSolver
-    solver::UTF8String
-    osil::UTF8String
-    osol::UTF8String
-    osrl::UTF8String
+    solver::String
+    osil::String
+    osol::String
+    osrl::String
     printLevel::Int
     options::Vector{Dict}
 end
@@ -89,10 +89,10 @@ OSOption(optname, optval; kwargs...) =
     OSOption(name = optname, value = optval; kwargs...)
 
 type OsilMathProgModel <: AbstractMathProgModel
-    solver::UTF8String
-    osil::UTF8String
-    osol::UTF8String
-    osrl::UTF8String
+    solver::String
+    osil::String
+    osol::String
+    osrl::String
     printLevel::Int
     options::Vector{Dict}
 
diff --git a/test/REQUIRE b/test/REQUIRE
index e4ae2fe..c97c9c8 100644
--- a/test/REQUIRE
+++ b/test/REQUIRE
@@ -1,2 +1,3 @@
-JuMP 0.13
+JuMP 0.15
+OffsetArrays 0.2.13
 FactCheck
diff --git a/test/runtests.jl b/test/runtests.jl
index e871829..7796c03 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -27,10 +27,10 @@ nvar = 10
 solver=OsilSolver(solver = "couenne")
 m = Model(solver=solver)
 @variable(m, -10 <= x[i=1:nvar] <= 10)
-@NLobjective(m, Min, sum{1/(1+exp(-x[i])), i=1:nvar})
-@constraint(m, sum{x[i], i=1:nvar} <= .4*nvar)
+@NLobjective(m, Min, sum(1/(1+exp(-x[i])) for i in 1:nvar))
+@constraint(m, sum(x[i] for i in 1:nvar) <= .4*nvar)
 @test solve(m) == :Optimal
-@test isapprox(getvalue(x[1]),-10.0)
+@test isapprox(getvalue(x[1]), -10.0)
 
 
 include(Pkg.dir("JuMP","test","runtests.jl"))