diff --git a/.travis.yml b/.travis.yml
index 471af5d..271f45e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,7 @@ notifications:
   email: false
 julia:
   - 1
+  - 1.0
 os:
   - linux
   - osx
diff --git a/Project.toml b/Project.toml
index 553146e..c2e56e2 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,14 +1,14 @@
 name = "CommonRLInterface"
 uuid = "d842c3ba-07a1-494f-bbec-f5741b0a3e98"
 authors = ["Zachary Sunberg <sunbergzach@gmail.com> and contributors"]
-version = "0.2.0"
+version = "0.2.1"
 
 [deps]
 MacroTools = "1914dd2f-81c6-5fcd-8719-6d5c9610ff09"
 
 [compat]
 MacroTools = "0.5"
-julia = "1.4"
+julia = "1"
 
 [extras]
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
diff --git a/test/runtests.jl b/test/runtests.jl
index e60ea99..18fb650 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -1,16 +1,17 @@
 using CommonRLInterface
 using Test
 
+mutable struct LQREnv <: AbstractEnv
+    s::Float64
+end
+
 @testset "from README" begin
-    mutable struct LQREnv <: AbstractEnv
-        s::Float64
-    end
 
     function CommonRLInterface.reset!(m::LQREnv)
         m.s = 0.0
     end
 
-    CommonRLInterface.actions(m::LQREnv) = (-1.0, 0.0, 1.0)
+    CommonRLInterface.actions(m::LQREnv) = [-1.0, 0.0, 1.0]
     CommonRLInterface.observe(m::LQREnv) = m.s
     CommonRLInterface.terminated(m::LQREnv) = false
 
@@ -40,7 +41,7 @@ MyEnv() = MyEnv(1)
 function CommonRLInterface.reset!(env::MyEnv)
     env.state = 1
 end
-CommonRLInterface.actions(env::MyEnv) = (-1, 0, 1)
+CommonRLInterface.actions(env::MyEnv) = [-1, 0, 1]
 CommonRLInterface.observe(env::MyEnv) = env.state
 CommonRLInterface.terminated(env::MyEnv) = false
 function CommonRLInterface.act!(env::MyEnv, a)
@@ -57,7 +58,7 @@ MyGame() = MyGame(1)
 function CommonRLInterface.reset!(env::MyGame)
     env.state = 1
 end
-CommonRLInterface.actions(env::MyGame) = (-1, 1)
+CommonRLInterface.actions(env::MyGame) = [-1, 1]
 CommonRLInterface.observe(env::MyGame) = env.state
 CommonRLInterface.terminated(env::MyGame) = false
 function CommonRLInterface.act!(env::MyGame, a)
@@ -140,7 +141,7 @@ end
 end
 
 @testset "spaces" begin
-    @provide CommonRLInterface.valid_actions(env::MyEnv) = (0, 1)
+    @provide CommonRLInterface.valid_actions(env::MyEnv) = [0, 1]
     @test provided(valid_actions, env)
     @test issubset(valid_actions(env), actions(env))
 
@@ -156,4 +157,6 @@ end
     @test observations(env) == 1:10
 end
 
-include("examples/gridworld.jl")
+if VERSION >= v"1.4" # not sure if this is the actual minimal version, but I know it will work
+    include("examples/gridworld.jl")
+end