diff --git a/src/AutoBuild.jl b/src/AutoBuild.jl
index e50676a49..eca4c9619 100644
--- a/src/AutoBuild.jl
+++ b/src/AutoBuild.jl
@@ -1658,8 +1658,13 @@ function build_project_dict(name, version, dependencies::Array{<:AbstractDepende
         "deps" => Dict{String,Any}(),
         # We require at least Julia 1.3+, for Pkg.Artifacts support, but we only claim
         # Julia 1.0+ by default so that empty JLLs can be installed on older versions.
-        "compat" => Dict{String,Any}("JLLWrappers" => "$(jllwrappers_compat)",
-                                     "julia" => "$(julia_compat)")
+        "compat" => Dict{String,Any}(
+            "JLLWrappers" => "$(jllwrappers_compat)",
+            "julia" => "$(julia_compat)",
+            # Stdlibs always used, we need to have compat bounds also for them.
+            "Libdl" => "1",
+            "Artifacts" => "1",
+        )
     )
 
     ctx = Pkg.Types.Context()
@@ -1683,12 +1688,15 @@ function build_project_dict(name, version, dependencies::Array{<:AbstractDepende
     if minimum_compat(julia_compat) < v"1.6"
         # `Pkg` is used in JLLWrappers only when we require Julia v1.5-.
         project["deps"]["Pkg"] = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
+        project["compat"]["Pkg"] = "1"
     end
     if lazy_artifacts
         project["deps"]["LazyArtifacts"] = "4af54fe1-eca0-43a8-85a7-787d91b784e3"
+        project["compat"]["LazyArtifacts"] = "1"
     end
     if !isempty(augment_platform_block)
         project["deps"]["TOML"] = "fa267f1f-6049-4f14-aa54-33bafae1ed76"
+        project["compat"]["TOML"] = "1"
     end
 
     return project
diff --git a/test/basic.jl b/test/basic.jl
index c8ac4c169..716415099 100644
--- a/test/basic.jl
+++ b/test/basic.jl
@@ -199,7 +199,7 @@ end
     @test dict["name"] == "$(name)_jll"
     @test dict["version"] == "1.0.0"
     @test dict["uuid"] == "8fcd9439-76b0-55f4-a525-bad0597c05d8"
-    @test dict["compat"] == Dict{String,Any}("julia" => "1.0", "JLLWrappers" => "1.2.0")
+    @test dict["compat"] == Dict{String,Any}("julia" => "1.0", "JLLWrappers" => "1.2.0", "Pkg" => "1", "Libdl" => "1", "Artifacts" => "1")
     @test all(in.(
         (
             "Pkg"       => "44cfe95a-1eb2-52ea-b672-e2afdf69b78f",
@@ -224,16 +224,16 @@ end
 
     # Ensure passing a Julia dependency bound works
     dict = build_project_dict(name, version, dependencies, "1.4")
-    @test dict["compat"] == Dict{String,Any}("julia" => "1.4", "JLLWrappers" => "1.2.0")
+    @test dict["compat"] == Dict{String,Any}("julia" => "1.4", "JLLWrappers" => "1.2.0", "Pkg" => "1", "Libdl" => "1", "Artifacts" => "1")
 
     dict = build_project_dict(name, version, dependencies, "~1.4")
-    @test dict["compat"] == Dict{String,Any}("julia" => "~1.4", "JLLWrappers" => "1.2.0")
+    @test dict["compat"] == Dict{String,Any}("julia" => "~1.4", "JLLWrappers" => "1.2.0", "Pkg" => "1", "Libdl" => "1", "Artifacts" => "1")
 
     @test_throws ErrorException build_project_dict(name, version, dependencies, "nonsense")
 
     # Ensure passing a JLLWrappers dependency bound works
     dict = build_project_dict(name, version, dependencies; jllwrappers_compat="1.4.0")
-    @test dict["compat"] == Dict{String,Any}("julia" => "1.0", "JLLWrappers" => "1.4.0")
+    @test dict["compat"] == Dict{String,Any}("julia" => "1.0", "JLLWrappers" => "1.4.0", "Pkg" => "1", "Libdl" => "1", "Artifacts" => "1")
 
     # Ensure passing compat bounds works
     dependencies = [
diff --git a/test/jll.jl b/test/jll.jl
index b45854a46..c09674187 100644
--- a/test/jll.jl
+++ b/test/jll.jl
@@ -25,7 +25,14 @@ module TestJLL end
                                   "Scratch"     => "6c6a2e73-6563-6170-7368-637461726353")
     @test project["name"] == "LibFoo_jll"
     @test project["uuid"] == "b250f842-3251-58d3-8ee4-9a24ab2bab3f"
-    @test project["compat"] == Dict("julia" => "1.0", "XZ_jll" => "=2.4.6", "JLLWrappers" => "1.2.0")
+    @test project["compat"] == Dict(
+        "julia" => "1.0",
+        "XZ_jll" => "=2.4.6",
+        "JLLWrappers" => "1.2.0",
+        "Libdl" => "1",
+        "Artifacts" => "1",
+        "Pkg" => "1",
+    )
     @test project["version"] == "1.3.5"
     # Make sure BuildDependency's don't find their way to the project
     @test_throws AssertionError build_project_dict("LibFoo", v"1.3.5", [Dependency("Zlib_jll"), BuildDependency("Xorg_util_macros_jll")])