diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 85a6fca81..57cc562db 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,6 +20,10 @@ jobs:
           - windows-latest
         arch:
           - x64
+        include:
+          - version: 'nightly'
+            os: ubuntu-latest
+            arch: x64
     steps:
       - uses: actions/checkout@v2
       - uses: julia-actions/setup-julia@v1
diff --git a/Project.toml b/Project.toml
index f29d1e1e0..5a05088af 100644
--- a/Project.toml
+++ b/Project.toml
@@ -21,6 +21,12 @@ Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 TableTraits = "3783bdb8-4a98-5b6b-af9a-565f29a5fe9c"
 Tables = "bd369af6-aec1-5ad0-b16a-f7cc5008161c"
 
+[weakdeps]
+Makie = "ee78f7c6-11fb-53f2-987a-cfe4a2b5a57a"
+
+[extensions]
+DimensionalDataMakie = "Makie"
+
 [compat]
 Adapt = "2, 3.0"
 ArrayInterface = "7"
@@ -36,9 +42,6 @@ TableTraits = "1"
 Tables = "1"
 julia = "1.6"
 
-[extensions]
-DimensionalDataMakie = "Makie"
-
 [extras]
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 ArrayInterface = "4fba245c-0d91-5ea0-9b3e-6abc04ee57a9"
@@ -60,6 +63,3 @@ Unitful = "1986cc42-f94f-5a68-af5c-568840ba703d"
 
 [targets]
 test = ["Aqua", "ArrayInterface", "BenchmarkTools", "Combinatorics", "CoordinateTransformations", "DataFrames", "Distributions", "Documenter", "ImageFiltering", "ImageTransformations", "OffsetArrays", "Plots", "Random", "SafeTestsets", "StatsPlots", "Test", "Unitful"]
-
-[weakdeps]
-Makie = "ee78f7c6-11fb-53f2-987a-cfe4a2b5a57a"