diff --git a/Project.toml b/Project.toml
index a093b790..3f82b034 100644
--- a/Project.toml
+++ b/Project.toml
@@ -19,11 +19,13 @@ Tables = "bd369af6-aec1-5ad0-b16a-f7cc5008161c"
 
 [weakdeps]
 Measurements = "eff96d63-e80a-5855-80a2-b1b0885c5ab7"
+MonteCarloMeasurements = "0987c9cc-fe09-11e8-30f0-b96dd679fdca"
 Tracker = "9f7883ad-71c0-57eb-9f7f-b5c9e6d3789c"
 Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 
 [extensions]
 RecursiveArrayToolsMeasurementsExt = "Measurements"
+RecursiveArrayToolsMonteCarloMeasurementsExt = "MonteCarloMeasurements"
 RecursiveArrayToolsTrackerExt = "Tracker"
 RecursiveArrayToolsZygoteExt = "Zygote"
 
@@ -46,6 +48,7 @@ Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
 LabelledArrays = "2ee39098-c373-598a-b85f-a56591580800"
 Measurements = "eff96d63-e80a-5855-80a2-b1b0885c5ab7"
+MonteCarloMeasurements = "0987c9cc-fe09-11e8-30f0-b96dd679fdca"
 NLsolve = "2774e3e8-f4cf-5e23-947b-6d7e65073b56"
 OrdinaryDiffEq = "1dea7af3-3e70-54e6-95c3-0bf5283fa5ed"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
diff --git a/ext/RecursiveArrayToolsMonteCarloMeasurementsExt.jl b/ext/RecursiveArrayToolsMonteCarloMeasurementsExt.jl
new file mode 100644
index 00000000..20a1ba16
--- /dev/null
+++ b/ext/RecursiveArrayToolsMonteCarloMeasurementsExt.jl
@@ -0,0 +1,16 @@
+module RecursiveArrayToolsMeasurementsExt
+
+import RecursiveArrayTools
+isdefined(Base, :get_extension) ? (import Measurements) : (import ..Measurements)
+
+function RecursiveArrayTools.recursive_unitless_bottom_eltype(a::Type{
+                                                                      <:MonteCarloMeasurements.Particles
+                                                                      })
+    typeof(one(a))
+end
+
+function RecursiveArrayTools.recursive_unitless_eltype(a::Type{<:MonteCarloMeasurements.Particles})
+    typeof(one(a))
+end
+
+end
diff --git a/test/downstream/Project.toml b/test/downstream/Project.toml
index 89471dae..79c99a1c 100644
--- a/test/downstream/Project.toml
+++ b/test/downstream/Project.toml
@@ -1,9 +1,13 @@
 [deps]
 ModelingToolkit = "961ee093-0014-501f-94e3-6117800e7a78"
+MonteCarloMeasurements = "0987c9cc-fe09-11e8-30f0-b96dd679fdca"
 OrdinaryDiffEq = "1dea7af3-3e70-54e6-95c3-0bf5283fa5ed"
+Unitful = "1986cc42-f94f-5a68-af5c-568840ba703d"
 Tracker = "9f7883ad-71c0-57eb-9f7f-b5c9e6d3789c"
 
 [compat]
 ModelingToolkit = "8.33"
+MonteCarloMeasurements = "1.1"
 OrdinaryDiffEq = "6.31"
+Unitful = "1.17"
 Tracker = "0.2"
\ No newline at end of file
diff --git a/test/downstream/measurements_and_units.jl b/test/downstream/measurements_and_units.jl
new file mode 100644
index 00000000..a6a39b60
--- /dev/null
+++ b/test/downstream/measurements_and_units.jl
@@ -0,0 +1,9 @@
+using Unitful,MonteCarloMeasurements,OrdinaryDiffEq
+
+g3 = 9.81u"m/s^2"
+du4 = [10.0±.1,10.0±.1].*u"m/s"
+tspan3 = (0.0,1.0).*u"s"
+f3(du,u,p,t) = [0.0u"m/s^2",-g3]
+u3 = [0.0,0.0].*u"m"
+problem4 = SecondOrderODEProblem(f3,du4,u3,tspan3)
+solve(problem4, Tsit5())
\ No newline at end of file