diff --git a/Project.toml b/Project.toml
index 6f491d55..9b488a1a 100644
--- a/Project.toml
+++ b/Project.toml
@@ -17,13 +17,27 @@ RecipesBase = "0.6.0, 0.7, 0.8, 1.0"
 Requires = "0.5.0, 1"
 julia = "1"
 
+[extensions]
+MeasurementsJunoExt = "Juno"
+MeasurementsRecipesBaseExt = "RecipesBase"
+MeasurementsSpecialFunctionsExt = "SpecialFunctions"
+MeasurementsUnitfulExt = "Unitful"
+
 [extras]
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
+Juno = "e5e0dc1b-0480-54bc-9374-aad01c23163d"
 QuadGK = "1fd47b50-473d-5c70-9696-f719f8f3bcdc"
+RecipesBase = "3cdcf5f2-1ef4-517c-9805-6587b60abb01"
 SpecialFunctions = "276daf66-3868-5448-9aa4-cd146d93841b"
 Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 Unitful = "1986cc42-f94f-5a68-af5c-568840ba703d"
 
 [targets]
-test = ["Aqua", "QuadGK", "SpecialFunctions", "Statistics", "Test", "Unitful"]
+test = ["Aqua", "QuadGK", "RecipesBase", "SpecialFunctions", "Statistics", "Test", "Unitful"]
+
+[weakdeps]
+Juno = "e5e0dc1b-0480-54bc-9374-aad01c23163d"
+RecipesBase = "3cdcf5f2-1ef4-517c-9805-6587b60abb01"
+SpecialFunctions = "276daf66-3868-5448-9aa4-cd146d93841b"
+Unitful = "1986cc42-f94f-5a68-af5c-568840ba703d"
diff --git a/ext/MeasurementsJunoExt.jl b/ext/MeasurementsJunoExt.jl
new file mode 100644
index 00000000..bedec167
--- /dev/null
+++ b/ext/MeasurementsJunoExt.jl
@@ -0,0 +1,46 @@
+### special-functions.jl
+#
+# Copyright (C) 2019 Mosè Giordano.
+#
+# Maintainer: Mosè Giordano <mose AT gnu DOT org>
+# Keywords: uncertainty, error propagation, physics
+#
+# This file is a part of Measurements.jl.
+#
+# License is MIT "Expat".
+#
+### Commentary:
+#
+# This file contains methods to print Measurement objects within a Juno enviroment
+#
+### Code:
+
+### Special functions
+module MeasurementsJunoExt
+
+if isdefined(Base, :get_extension)
+    using Measurements
+    using Juno
+else
+    using ..Measurements
+    using ..Juno
+end
+
+Juno.render(i::Juno.Inline, measure::Measurement) =
+Juno.render(i, Juno.Row(measure.val, Text(" ± "), measure.err))
+
+Juno.Row(measure.val, Text(" ± "), measure.err)
+
+function Juno.render(ji::Juno.Inline, cm::Complex{<:Measurement})
+    r, i = reim(cm)
+    if signbit(i) && !isnan(i)
+        i = -i
+        sss = " - "
+    else
+        sss = " + "
+    end
+    Juno.render(ji, Juno.Row("(", Juno.render(ji, r), ")", sss,
+                            "(", Juno.render(ji, i), ")im"))
+end
+
+end
diff --git a/src/plot-recipes.jl b/ext/MeasurementsRecipesBaseExt.jl
similarity index 81%
rename from src/plot-recipes.jl
rename to ext/MeasurementsRecipesBaseExt.jl
index 1aaa0d6a..f1449d06 100644
--- a/src/plot-recipes.jl
+++ b/ext/MeasurementsRecipesBaseExt.jl
@@ -14,8 +14,15 @@
 # This file defines the recipes to plot Measurements vectors with Plots.jl package in 2D.
 #
 ### Code:
+module MeasurementsRecipesBaseExt
 
-using RecipesBase
+if isdefined(Base, :get_extension)
+    using Measurements: Measurement, value, uncertainty
+    using RecipesBase
+else
+    using ..Measurements: Measurement, value, uncertainty
+    using ..RecipesBase
+end
 
 @recipe function f(y::AbstractArray{<:Measurement})
     yerror := uncertainty.(y)
@@ -44,3 +51,5 @@ end
     yerror := uncertainty.(y)
     x, value.(y)
 end
+
+end
diff --git a/src/special-functions.jl b/ext/MeasurementsSpecialFunctionsExt.jl
similarity index 96%
rename from src/special-functions.jl
rename to ext/MeasurementsSpecialFunctionsExt.jl
index 8f7563e4..8879f019 100644
--- a/src/special-functions.jl
+++ b/ext/MeasurementsSpecialFunctionsExt.jl
@@ -17,8 +17,17 @@
 ### Code:
 
 ### Special functions
-using .SpecialFunctions
+module MeasurementsSpecialFunctionsExt
 
+if isdefined(Base, :get_extension)
+    using Measurements
+    using Measurements: result
+    using SpecialFunctions
+else
+    using ..Measurements
+    using ..Measurements: result
+    using ..SpecialFunctions
+end
 # Error function: erf, erfinv, erfc, erfcinv, erfcx, erfi, dawson
 
 function SpecialFunctions.erf(a::Measurement{T}) where {T<:AbstractFloat}
@@ -230,3 +239,4 @@ function Base.factorial(a::Measurement)
                  :factorial)
     SpecialFunctions.gamma(a + one(a))
 end
+end
diff --git a/src/unitful.jl b/ext/MeasurementsUnitfulExt.jl
similarity index 72%
rename from src/unitful.jl
rename to ext/MeasurementsUnitfulExt.jl
index d0239eb1..12ba3d29 100644
--- a/src/unitful.jl
+++ b/ext/MeasurementsUnitfulExt.jl
@@ -15,7 +15,19 @@
 #
 ### Code:
 
-import .Unitful: AbstractQuantity, unit, ustrip
+module MeasurementsUnitfulExt
+
+if isdefined(Base, :get_extension)
+    using Measurements
+    using Measurements: value, uncertainty
+    import Unitful: AbstractQuantity, unit, ustrip
+else
+    using ..Measurements
+    using ..Measurements: value, uncertainty
+    import ..Unitful: AbstractQuantity, unit, ustrip
+end
+
+
 function Measurements.measurement(a::T, b::T) where {T<:AbstractQuantity}
     u = unit(a)
     return measurement(ustrip(u, a), ustrip(u, b)) * u
@@ -33,3 +45,5 @@ function Measurements.uncertainty(x::AbstractQuantity)
     u = unit(x)
     return uncertainty(ustrip(u, x)) * u
 end
+
+end
diff --git a/src/Measurements.jl b/src/Measurements.jl
index b8be0909..6293f3e3 100644
--- a/src/Measurements.jl
+++ b/src/Measurements.jl
@@ -27,8 +27,6 @@ using Statistics
 
 import Statistics: cor, cov
 
-using Requires
-
 # Functions provided by this package and exposed to users
 export Measurement, measurement, ±
 # Re-export from Statistics
@@ -85,11 +83,6 @@ end
 # Start from 1, 0 is reserved to derived quantities
 const tag_counter = Threads.Atomic{UInt64}(1)
 
-function __init__()
-    @require Unitful="1986cc42-f94f-5a68-af5c-568840ba703d" include("unitful.jl")
-    @require SpecialFunctions="276daf66-3868-5448-9aa4-cd146d93841b" include("special-functions.jl")
-end
-
 measurement(x::Measurement) = x
 measurement(val::T) where {T<:AbstractFloat} = Measurement(val, zero(T), UInt64(0), empty_der2(val))
 measurement(val::Real) = measurement(float(val))
@@ -128,6 +121,19 @@ include("math.jl")
 include("linear_algebra.jl")
 include("show.jl")
 include("parsing.jl")
-include("plot-recipes.jl")
+
+if !isdefined(Base,:get_extension)
+    using Requires
+    using RecipesBase
+    include("../ext/MeasurementsRecipesBaseExt.jl")
+end
+
+@static if !isdefined(Base, :get_extension)
+    function __init__()
+        @require Unitful="1986cc42-f94f-5a68-af5c-568840ba703d" include("../ext/MeasurementsUnitfulExt.jl")
+        @require SpecialFunctions="276daf66-3868-5448-9aa4-cd146d93841b" include("../ext/MeasurementsSpecialFunctionsExt.jl")
+        @require Juno="e5e0dc1b-0480-54bc-9374-aad01c23163d" include("../ext/MeasurementsJunoExt.jl")
+    end
+end
 
 end # module
diff --git a/src/show.jl b/src/show.jl
index f190fe20..033e7b46 100644
--- a/src/show.jl
+++ b/src/show.jl
@@ -93,23 +93,3 @@ end
 if VERSION >= v"1.6.0-rc1"
     Printf.tofloat(measure::Measurement) = Printf.tofloat(measure.val)
 end
-
-### Juno pretty printing
-@require Juno="e5e0dc1b-0480-54bc-9374-aad01c23163d" begin
-    Juno.render(i::Juno.Inline, measure::Measurement) =
-        Juno.render(i, Juno.Row(measure.val, Text(" ± "), measure.err))
-
-    Juno.Row(measure.val, Text(" ± "), measure.err)
-
-    function Juno.render(ji::Juno.Inline, cm::Complex{<:Measurement})
-        r, i = reim(cm)
-        if signbit(i) && !isnan(i)
-            i = -i
-            sss = " - "
-        else
-            sss = " + "
-        end
-        Juno.render(ji, Juno.Row("(", Juno.render(ji, r), ")", sss,
-                                 "(", Juno.render(ji, i), ")im"))
-    end
-end
diff --git a/test/runtests.jl b/test/runtests.jl
index 570e5da2..75adc60e 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -1,6 +1,12 @@
 using Measurements, SpecialFunctions, QuadGK, Calculus
 using Test, LinearAlgebra, Statistics, Unitful, Printf, Aqua
-Aqua.test_all(Measurements)
+
+if !isdefined(Base,:get_extension)
+    Aqua.test_all(Measurements)
+else
+    Aqua.test_all(Measurements; stale_deps=false)
+    Aqua.test_stale_deps(Measurements; ignore=[:RecipesBase, :Requires])
+end
 
 import Base: isapprox
 import Measurements: value, uncertainty