diff --git a/src/stale_deps.jl b/src/stale_deps.jl
index 38eb1c6a..3c2b57c4 100644
--- a/src/stale_deps.jl
+++ b/src/stale_deps.jl
@@ -18,16 +18,24 @@ Test that `package` loads all dependencies listed in `Project.toml`.
 - `ignore::Vector{Symbol}`: names of dependent packages to be ignored.
 """
 function test_stale_deps(packages; kwargs...)
-    @testset "$(result.label)" for result in analyze_stale_deps(packages, kwargs...)
+    @testset "$(result.label)" for result in
+                                   StaleDeps.analyze_stale_deps(packages, kwargs...)
         @debug result.label result
         @test result ⊜ true
     end
 end
 
+module StaleDeps
+
+using Base: PkgId, UUID
+using Pkg: TOML
+
+using Aqua: LazyTestResult, aspkgids, reprpkgid, root_project_or_failed_lazytest
+
 analyze_stale_deps(packages, kwargs...) =
-    [_analyze_stale_deps_1(pkg; kwargs...) for pkg in aspkgids(packages)]
+    [analyze_stale_deps_1(pkg; kwargs...) for pkg in aspkgids(packages)]
 
-function _analyze_stale_deps_1(pkg::PkgId; ignore::AbstractVector{Symbol} = Symbol[])
+function analyze_stale_deps_1(pkg::PkgId; ignore::AbstractVector{Symbol} = Symbol[])
     label = "$pkg"
 
     result = root_project_or_failed_lazytest(pkg)
@@ -62,7 +70,7 @@ function _analyze_stale_deps_1(pkg::PkgId; ignore::AbstractVector{Symbol} = Symb
     output = output[pos.stop+1:end]
     loaded_uuids = map(UUID, eachline(IOBuffer(output)))
 
-    return _analyze_stale_deps_2(;
+    return analyze_stale_deps_2(;
         pkg = pkg,
         deps = deps,
         weakdeps = weakdeps,
@@ -72,7 +80,7 @@ function _analyze_stale_deps_1(pkg::PkgId; ignore::AbstractVector{Symbol} = Symb
 end
 
 # Side-effect -free part of stale dependency analysis.
-function _analyze_stale_deps_2(;
+function analyze_stale_deps_2(;
     pkg::PkgId,
     deps::AbstractVector{PkgId},
     weakdeps::AbstractVector{PkgId},
@@ -109,3 +117,5 @@ function _analyze_stale_deps_2(;
     ]
     return LazyTestResult(label, join(msglines, "\n"), false)
 end
+
+end # module
diff --git a/test/test_stale_deps.jl b/test/test_stale_deps.jl
index 926840cb..7f14145b 100644
--- a/test/test_stale_deps.jl
+++ b/test/test_stale_deps.jl
@@ -1,9 +1,11 @@
 module TestStaleDeps
 
 include("preamble.jl")
-using Aqua: PkgId, UUID, _analyze_stale_deps_2, ispass, ⊜
+using Base: PkgId, UUID
+using Aqua: ispass, ⊜
+using Aqua.StaleDeps: analyze_stale_deps, analyze_stale_deps_2
 
-@testset "_analyze_stale_deps_2" begin
+@testset "analyze_stale_deps_2" begin
     pkg = PkgId(UUID(42), "TargetPkg")
 
     dep1 = PkgId(UUID(1), "Dep1")
@@ -11,42 +13,42 @@ using Aqua: PkgId, UUID, _analyze_stale_deps_2, ispass, ⊜
     dep3 = PkgId(UUID(3), "Dep3")
 
     @testset "pass" begin
-        @test _analyze_stale_deps_2(;
+        @test analyze_stale_deps_2(;
             pkg = pkg,
             deps = PkgId[],
             weakdeps = PkgId[],
             loaded_uuids = UUID[],
             ignore = Symbol[],
         ) ⊜ true
-        @test _analyze_stale_deps_2(;
+        @test analyze_stale_deps_2(;
             pkg = pkg,
             deps = PkgId[dep1],
             weakdeps = PkgId[],
             loaded_uuids = UUID[dep1.uuid, dep2.uuid, dep3.uuid],
             ignore = Symbol[],
         ) ⊜ true
-        @test _analyze_stale_deps_2(;
+        @test analyze_stale_deps_2(;
             pkg = pkg,
             deps = PkgId[dep1],
             weakdeps = PkgId[],
             loaded_uuids = UUID[dep2.uuid, dep3.uuid],
             ignore = Symbol[:Dep1],
         ) ⊜ true
-        @test _analyze_stale_deps_2(;
+        @test analyze_stale_deps_2(;
             pkg = pkg,
             deps = PkgId[dep1],
             weakdeps = PkgId[dep2],
             loaded_uuids = UUID[dep1.uuid],
             ignore = Symbol[],
         ) ⊜ true
-        @test _analyze_stale_deps_2(;
+        @test analyze_stale_deps_2(;
             pkg = pkg,
             deps = PkgId[dep1, dep2],
             weakdeps = PkgId[dep2],
             loaded_uuids = UUID[dep1.uuid],
             ignore = Symbol[],
         ) ⊜ true
-        @test _analyze_stale_deps_2(;
+        @test analyze_stale_deps_2(;
             pkg = pkg,
             deps = PkgId[dep1, dep2],
             weakdeps = PkgId[dep2],
@@ -55,21 +57,21 @@ using Aqua: PkgId, UUID, _analyze_stale_deps_2, ispass, ⊜
         ) ⊜ true
     end
     @testset "failure" begin
-        @test _analyze_stale_deps_2(;
+        @test analyze_stale_deps_2(;
             pkg = pkg,
             deps = PkgId[dep1],
             weakdeps = PkgId[],
             loaded_uuids = UUID[],
             ignore = Symbol[],
         ) ⊜ false
-        @test _analyze_stale_deps_2(;
+        @test analyze_stale_deps_2(;
             pkg = pkg,
             deps = PkgId[dep1],
             weakdeps = PkgId[],
             loaded_uuids = UUID[dep2.uuid, dep3.uuid],
             ignore = Symbol[],
         ) ⊜ false
-        @test _analyze_stale_deps_2(;
+        @test analyze_stale_deps_2(;
             pkg = pkg,
             deps = PkgId[dep1, dep2],
             weakdeps = PkgId[],
@@ -82,7 +84,7 @@ end
 with_sample_pkgs() do
     @testset "Package without `deps`" begin
         pkg = AquaTesting.SAMPLE_PKG_BY_NAME["PkgWithoutTestProject"]
-        results = Aqua.analyze_stale_deps(pkg)
+        results = analyze_stale_deps(pkg)
         @test length(results) == 1
         r, = results
         @test ispass(r)
@@ -92,7 +94,7 @@ with_sample_pkgs() do
     end
     @testset "PkgWithoutProject" begin
         pkg = AquaTesting.SAMPLE_PKG_BY_NAME["PkgWithoutProject"]
-        results = Aqua.analyze_stale_deps(pkg)
+        results = analyze_stale_deps(pkg)
         @test length(results) == 1
         r, = results
         @test !ispass(r)