diff --git a/Project.toml b/Project.toml
index 3e610c9..dd0f78c 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,17 +1,18 @@
 name = "EcologicalNetworksPlots"
 uuid = "9f7a259d-73a7-556d-a7a2-3eb122d3865b"
 authors = ["Timothée Poisot <timothee.poisot@umontreal.ca>"]
-version = "0.0.9"
+version = "0.0.10"
 
 [deps]
 EcologicalNetworks = "f03a62fe-f8ab-5b77-a061-bb599b765229"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 RecipesBase = "3cdcf5f2-1ef4-517c-9805-6587b60abb01"
+SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 StatsBase = "2913bbd2-ae8a-5f71-8c99-4fb6c76f3a91"
 
 [compat]
-EcologicalNetworks = "0.3"
+EcologicalNetworks = "0.3, 0.4"
 RecipesBase = "1.0"
 StatsBase = "0.33"
 julia = "1.3"
diff --git a/src/EcologicalNetworksPlots.jl b/src/EcologicalNetworksPlots.jl
index 8528122..5ed1a60 100644
--- a/src/EcologicalNetworksPlots.jl
+++ b/src/EcologicalNetworksPlots.jl
@@ -4,6 +4,7 @@ using EcologicalNetworks
 using RecipesBase
 using StatsBase
 using Statistics
+using SparseArrays
 
 # Various layout manipulation functions
 include(joinpath(".", "utilities.jl"))
diff --git a/src/recipes.jl b/src/recipes.jl
index 941fc9e..436490d 100644
--- a/src/recipes.jl
+++ b/src/recipes.jl
@@ -1,7 +1,11 @@
 @recipe function f(network::T) where {T <: AbstractEcologicalNetwork}
-   if plotattributes[:seriestype] == :heatmap
-      network.A
-   end
+    if plotattributes[:seriestype] == :heatmap
+        if hasfield(T, :A)
+            network.A
+        else
+            network.edges
+        end
+    end
 end
 
 @recipe function f(layout::Dict{K,NodePosition}, network::T;
@@ -18,7 +22,11 @@ end
     legend --> false
 
     if typeof(network) <: QuantitativeNetwork
-        int_range = (minimum(filter(x -> x > 0.0, network.A)), maximum(network.A))
+        if hasfield(T, :A)
+            int_range = (minimum(filter(x -> x > 0.0, network.A)), maximum(network.A))
+        else
+            int_range = extrema(network.edges.nzval)
+        end
     end
 
     if get(plotattributes, :seriestype, :plot) == :plot
@@ -29,7 +37,7 @@ end
                 seriestype := :line
                 linecolor --> :darkgrey
                 if typeof(network) <: QuantitativeNetwork
-                    linewidth --> EcologicalNetworksPlots.scale_value(interaction.strength, int_range, (0.5, 3.5))
+                    linewidth --> EcologicalNetworksPlots._scale_value(interaction.strength, int_range, (0.5, 3.5))
                 end
                 if typeof(network) <: ProbabilisticNetwork
                     seriesalpha --> interaction.probability
@@ -44,12 +52,12 @@ end
 
             if nodesize !== nothing
                 nsi_range = (minimum(values(nodesize)), maximum(values(nodesize)))
-                markersize := [EcologicalNetworksPlots.scale_value(nodesize[s], nsi_range, (2,8)) for s in species(network)]
+                markersize := [EcologicalNetworksPlots._scale_value(nodesize[s], nsi_range, (2,8)) for s in species(network)]
             end
 
             if nodefill !== nothing
                 nfi_range = (minimum(values(nodefill)), maximum(values(nodefill)))
-                marker_z := [EcologicalNetworksPlots.scale_value(nodefill[s], nfi_range, (0,1)) for s in species(network)]
+                marker_z := [EcologicalNetworksPlots._scale_value(nodefill[s], nfi_range, (0,1)) for s in species(network)]
             end
 
             if bipartite
diff --git a/src/utilities.jl b/src/utilities.jl
index 186ffee..dbdc3ff 100644
--- a/src/utilities.jl
+++ b/src/utilities.jl
@@ -1,4 +1,4 @@
-function scale_value(k::T1, from::NTuple{2,T2}, to::NTuple{2,T3}) where {T1 <: Number, T2 <: Number, T3 <: Number}
+function _scale_value(k::T1, from::NTuple{2,T2}, to::NTuple{2,T3}) where {T1 <: Number, T2 <: Number, T3 <: Number}
     m, M = from
     l, U = to
     inter = (k-m)/(M-m)
@@ -24,12 +24,12 @@ function distribute_layout!(L, X::NTuple{2,T}, Y::NTuple{2,T}) where {T <: Numbe
     range_x = (minimum(x), maximum(x))
     range_y = (minimum(y), maximum(y))
     for k in keys(L)
-        L[k].x = EcologicalNetworksPlots.scale_value(L[k].x, range_x, X)
-        L[k].y = EcologicalNetworksPlots.scale_value(L[k].y, range_y, Y)
+        L[k].x = EcologicalNetworksPlots._scale_value(L[k].x, range_x, X)
+        L[k].y = EcologicalNetworksPlots._scale_value(L[k].y, range_y, Y)
     end
 end
 
-function spread_levels!(L; ratio::Float64=1.0)
+function _spread_levels!(L; ratio::Float64=1.0)
     for s in keys(L)
         L[s].y *= ratio
     end
diff --git a/test/runtests.jl b/test/runtests.jl
index 383972c..a0d33f2 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -59,3 +59,7 @@ for s in species(Fweb)
 end
 plot(I, Fweb)
 scatter!(I, Fweb)
+
+heatmap(Unes)
+savefig(joinpath(figpath, "heatmap.png"))
+@test isfile(joinpath(figpath, "heatmap.png"))
\ No newline at end of file