diff --git a/stdlib/Pkg/src/Operations.jl b/stdlib/Pkg/src/Operations.jl
index 858019b6ae02e0..fd04ff86cff1c2 100644
--- a/stdlib/Pkg/src/Operations.jl
+++ b/stdlib/Pkg/src/Operations.jl
@@ -791,6 +791,19 @@ function with_dependencies_loadable_at_toplevel(f, mainctx::Context, pkg::Packag
     need_to_resolve = false
     is_project = Types.is_project(localctx.env, pkg)
 
+    # Only put `pkg` and its deps + target deps (recursively) in the temp project
+    collect_deps!(seen, pkg) = begin
+        pkg.uuid in seen && return
+        push!(seen, pkg.uuid)
+        info = manifest_info(localctx.env, pkg.uuid)
+        info === nothing && return
+        need_to_resolve |= haskey(info, "path")
+        localctx.env.project["deps"][pkg.name] = string(pkg.uuid)
+        for (dpkg, duuid) in get(info, "deps", [])
+            collect_deps!(seen, PackageSpec(dpkg, UUID(duuid)))
+        end
+    end
+
     if is_project # testing the project itself
         # the project might have changes made to it so need to resolve
         need_to_resolve = true
@@ -807,23 +820,11 @@ function with_dependencies_loadable_at_toplevel(f, mainctx::Context, pkg::Packag
         )]
     else
         # Only put `pkg` and its deps (recursively) in the temp project
-        collect_deps!(seen, pkg) = begin
-            pkg.uuid in seen && return
-            push!(seen, pkg.uuid)
-            info = manifest_info(localctx.env, pkg.uuid)
-            need_to_resolve |= haskey(info, "path")
-            localctx.env.project["deps"][pkg.name] = string(pkg.uuid)
-            for (dpkg, duuid) in get(info, "deps", [])
-                collect_deps!(seen, PackageSpec(dpkg, UUID(duuid)))
-            end
-        end
-        # Only put `pkg` and its deps (revursively) in the temp project
         empty!(localctx.env.project["deps"])
         localctx.env.project["deps"][pkg.name] = string(pkg.uuid)
-
         seen_uuids = Set{UUID}()
-        collect_deps!(seen_uuids, pkg)# Only put `pkg` and its deps (recursively) in the temp project
-
+        # Only put `pkg` and its deps (recursively) in the temp project
+        collect_deps!(seen_uuids, pkg)
     end
 
     pkgs = PackageSpec[]
@@ -833,6 +834,11 @@ function with_dependencies_loadable_at_toplevel(f, mainctx::Context, pkg::Packag
     end
     if !isempty(target)
         collect_target_deps!(localctx, pkgs, pkg, target)
+        seen_uuids = Set{UUID}()
+        for dpkg in pkgs
+            # Also put eventual deps of target deps in new manifest
+            collect_deps!(seen_uuids, dpkg)
+        end
     end
 
     mktempdir() do tmpdir
diff --git a/stdlib/Pkg/test/pkg.jl b/stdlib/Pkg/test/pkg.jl
index 6538a4bba0d88b..459672847f9ce6 100644
--- a/stdlib/Pkg/test/pkg.jl
+++ b/stdlib/Pkg/test/pkg.jl
@@ -435,6 +435,18 @@ temp_pkg_dir() do project_path
     end
 end
 
+@testset "dependency of test dependency (#567)" begin
+    mktempdir() do tmpdir
+        temp_pkg_dir() do project_path; cd(tmpdir) do; with_temp_env() do
+            for x in ["x1", "x2", "x3"]
+                cp(joinpath(@__DIR__, "test_packages/$x"), joinpath(tmpdir, "$x"))
+                Pkg.develop(Pkg.PackageSpec(url = joinpath(tmpdir, x)))
+            end
+            Pkg.test("x3")
+        end end end
+    end
+end
+
 include("repl.jl")
 include("api.jl")
 
diff --git a/stdlib/Pkg/test/test_packages/x1/Project.toml b/stdlib/Pkg/test/test_packages/x1/Project.toml
new file mode 100644
index 00000000000000..1026a589fde5c9
--- /dev/null
+++ b/stdlib/Pkg/test/test_packages/x1/Project.toml
@@ -0,0 +1,5 @@
+name = "x1"
+uuid = "52033f98-96b1-11e8-17f9-4d5b643961d8"
+version = "0.1.0"
+
+[deps]
diff --git a/stdlib/Pkg/test/test_packages/x1/src/x1.jl b/stdlib/Pkg/test/test_packages/x1/src/x1.jl
new file mode 100644
index 00000000000000..bd929422af3f46
--- /dev/null
+++ b/stdlib/Pkg/test/test_packages/x1/src/x1.jl
@@ -0,0 +1,5 @@
+module x1
+
+greet() = print("Hello World!")
+
+end # module
diff --git a/stdlib/Pkg/test/test_packages/x2/Project.toml b/stdlib/Pkg/test/test_packages/x2/Project.toml
new file mode 100644
index 00000000000000..ada91ef334f7c0
--- /dev/null
+++ b/stdlib/Pkg/test/test_packages/x2/Project.toml
@@ -0,0 +1,6 @@
+name = "x2"
+uuid = "52baf49e-96b1-11e8-23dd-2d073a3a6758"
+version = "0.1.0"
+
+[deps]
+x1 = "52033f98-96b1-11e8-17f9-4d5b643961d8"
diff --git a/stdlib/Pkg/test/test_packages/x2/src/x2.jl b/stdlib/Pkg/test/test_packages/x2/src/x2.jl
new file mode 100644
index 00000000000000..8afcc2e0134773
--- /dev/null
+++ b/stdlib/Pkg/test/test_packages/x2/src/x2.jl
@@ -0,0 +1,5 @@
+module x2
+
+greet() = print("Hello World!")
+
+end # module
diff --git a/stdlib/Pkg/test/test_packages/x3/Project.toml b/stdlib/Pkg/test/test_packages/x3/Project.toml
new file mode 100644
index 00000000000000..8cd99a21c79226
--- /dev/null
+++ b/stdlib/Pkg/test/test_packages/x3/Project.toml
@@ -0,0 +1,9 @@
+name = "x3"
+uuid = "53501efc-96b1-11e8-0d90-e1a45c33f0f8"
+version = "0.1.0"
+
+[extras]
+x2 = "52baf49e-96b1-11e8-23dd-2d073a3a6758"
+
+[targets]
+test = ["x2"]
diff --git a/stdlib/Pkg/test/test_packages/x3/src/x3.jl b/stdlib/Pkg/test/test_packages/x3/src/x3.jl
new file mode 100644
index 00000000000000..a9b26ef703c753
--- /dev/null
+++ b/stdlib/Pkg/test/test_packages/x3/src/x3.jl
@@ -0,0 +1,5 @@
+module x3
+
+greet() = print("Hello World!")
+
+end # module
diff --git a/stdlib/Pkg/test/test_packages/x3/test/runtests.jl b/stdlib/Pkg/test/test_packages/x3/test/runtests.jl
new file mode 100644
index 00000000000000..85b0336d373e18
--- /dev/null
+++ b/stdlib/Pkg/test/test_packages/x3/test/runtests.jl
@@ -0,0 +1,7 @@
+module X3Tests
+
+using x2
+
+println("hello")
+
+end # module