diff --git a/.github/workflows/Test.yml b/.github/workflows/Test.yml
index 37e73f3784..ecf12bbf1f 100644
--- a/.github/workflows/Test.yml
+++ b/.github/workflows/Test.yml
@@ -34,7 +34,7 @@ jobs:
             fail-fast: false
             matrix:
                 # We test quite a lot of versions because we do some OS and version specific things unfortunately
-                julia-version: ["1.6", "1.7", "1.8", "1.9"] #, "nightly"]
+                julia-version: ["1.6", "1.7", "1.8", "1.9", "nightly"]
                 os: [ubuntu-latest, macOS-latest, windows-latest]
 
         steps:
diff --git a/test/MacroAnalysis.jl b/test/MacroAnalysis.jl
index 171f9e8ce0..4c54571674 100644
--- a/test/MacroAnalysis.jl
+++ b/test/MacroAnalysis.jl
@@ -624,7 +624,7 @@ import Memoize: @memoize
 
     @testset "Package macro 2" begin
         🍭.options.evaluation.workspace_use_distributed = true
-        
+
         notebook = Notebook([
             Cell("z = x^2 + y"),
             Cell("@variables x y"),
@@ -632,7 +632,7 @@ import Memoize: @memoize
             begin
                 import Pkg
                 Pkg.activate(mktempdir())
-                Pkg.add(Pkg.PackageSpec(name="Symbolics", version="1"))
+                Pkg.add(Pkg.PackageSpec(name="Symbolics", version="5.5.1"))
                 import Symbolics: @variables
             end
             """),
@@ -648,7 +648,7 @@ import Memoize: @memoize
 
         @test cell(1) |> noerror
         @test cell(2) |> noerror
-        @test cell(2) |> noerror
+        @test cell(3) |> noerror
 
         update_run!(🍭, notebook, notebook.cells)
 
diff --git a/test/packages/Basic.jl b/test/packages/Basic.jl
index 6a8af7e9f5..773be1ec71 100644
--- a/test/packages/Basic.jl
+++ b/test/packages/Basic.jl
@@ -446,50 +446,52 @@ import Distributed
         WorkspaceManager.unmake_workspace((🍭, notebook))
     end
 
-    @testset "File format -- Forwards compat" begin
-        # Using Distributed, we will create a new Julia process in which we install Pluto 0.14.7 (before PlutoPkg). We run the new notebook file on the old Pluto.
-        p = Distributed.addprocs(1) |> first
-
-        @test post_pkg_notebook isa String
-
-        Distributed.remotecall_eval(Main, p, quote
-            path = tempname()
-            write(path, $(post_pkg_notebook))
-            import Pkg
-            # optimization:
-            if isdefined(Pkg, :UPDATED_REGISTRY_THIS_SESSION)
-                Pkg.UPDATED_REGISTRY_THIS_SESSION[] = true
-            end
+    @static if VERSION ≤ v"1.9"
+        @testset "File format -- Forwards compat" begin
+            # Using Distributed, we will create a new Julia process in which we install Pluto 0.14.7 (before PlutoPkg). We run the new notebook file on the old Pluto.
+            p = Distributed.addprocs(1) |> first
+
+            @test post_pkg_notebook isa String
+
+            Distributed.remotecall_eval(Main, p, quote
+                path = tempname()
+                write(path, $(post_pkg_notebook))
+                import Pkg
+                # optimization:
+                if isdefined(Pkg, :UPDATED_REGISTRY_THIS_SESSION)
+                    Pkg.UPDATED_REGISTRY_THIS_SESSION[] = true
+                end
 
-            Pkg.activate(mktempdir())
-            Pkg.add(Pkg.PackageSpec(;name="Pluto",version=v"0.14.7"))
-            import Pluto
-            @assert Pluto.PLUTO_VERSION == v"0.14.7"
+                Pkg.activate(mktempdir())
+                Pkg.add(Pkg.PackageSpec(;name="Pluto",version=v"0.14.7"))
+                import Pluto
+                @assert Pluto.PLUTO_VERSION == v"0.14.7"
 
-            s = Pluto.ServerSession()
-            s.options.evaluation.workspace_use_distributed = false
+                s = Pluto.ServerSession()
+                s.options.evaluation.workspace_use_distributed = false
 
-            nb = Pluto.SessionActions.open(s, path; run_async=false)
+                nb = Pluto.SessionActions.open(s, path; run_async=false)
 
-            nothing
-        end)
+                nothing
+            end)
 
-        # Cells that use Example will error because the package is not installed.
+            # Cells that use Example will error because the package is not installed.
 
-        # @test Distributed.remotecall_eval(Main, p, quote
-        #     nb.cells[1].errored == false
-        # end)
-        @test Distributed.remotecall_eval(Main, p, quote
-            nb.cells[2].errored == false
-        end)
-        # @test Distributed.remotecall_eval(Main, p, quote
-        #     nb.cells[3].errored == false
-        # end)
-        # @test Distributed.remotecall_eval(Main, p, quote
-        #     nb.cells[3].output.body == "25"
-        # end)
+            # @test Distributed.remotecall_eval(Main, p, quote
+            #     nb.cells[1].errored == false
+            # end)
+            @test Distributed.remotecall_eval(Main, p, quote
+                nb.cells[2].errored == false
+            end)
+            # @test Distributed.remotecall_eval(Main, p, quote
+            #     nb.cells[3].errored == false
+            # end)
+            # @test Distributed.remotecall_eval(Main, p, quote
+            #     nb.cells[3].output.body == "25"
+            # end)
 
-        Distributed.rmprocs([p])
+            Distributed.rmprocs([p])
+        end
     end
 
     @testset "PkgUtils -- reset" begin