diff --git a/.github/workflows/CI-CheckBy.yml b/.github/workflows/CI-CheckBy.yml
new file mode 100644
index 00000000..509e217b
--- /dev/null
+++ b/.github/workflows/CI-CheckBy.yml
@@ -0,0 +1,52 @@
+name: CI-CheckBy
+on:
+  schedule:
+    - cron: '0 0 * * 0'
+  push:
+      branches:
+        - main
+      tags:
+        - v*
+  pull_request:
+  release:
+  workflow_dispatch:
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
+jobs:
+  run:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        group:
+          - CheckByAqua
+          - CheckByJET
+          - CheckByExplicitImports
+        version:
+          - release
+          - lts
+          - nightly
+        os:
+          - ubuntu-latest
+          # - macOS-latest
+          # - windows-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: julia-actions/install-juliaup@v2
+        with:
+          channel: ${{ matrix.version }}
+      - uses: julia-actions/cache@v2
+      - uses: julia-actions/julia-buildpkg@v1
+      - uses: julia-actions/julia-runtest@v1
+        env:
+          GROUP: ${{ matrix.group }}
+      - uses: julia-actions/julia-processcoverage@v1
+      - uses: codecov/codecov-action@v5
+        with:
+          files: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}
+          verbose: true
+      # - uses: julia-actions/julia-uploadcoveralls@v1
+      #   env:
+      #     COVERALLS_TOKEN: ${{ secrets.COVERALLS_TOKEN }}
diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index f173b0d9..fe47ee29 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -25,8 +25,6 @@ jobs:
           - SmokeXYOut
           - SmokeXYIn
           - Regression
-          - Quality
-          - Instability
         version:
           - release
           - lts
diff --git a/test/Project.toml b/test/Project.toml
index e714d422..ea7a6dcc 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -6,6 +6,7 @@ DataFrames = "a93c6f00-e57d-5684-b7b6-d8193f3e46c0"
 DifferentiationInterface = "a0c0ee7d-e4b9-4e03-894e-1c5f64a51d63"
 Distances = "b4f34e82-e78d-54a5-968a-f98e89d6e8f7"
 Distributions = "31c24e10-a181-5473-b8eb-7969acd0382f"
+ExplicitImports = "7d51a73a-1435-4ff3-83d9-f097790105c7"
 ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 Logging = "56ddb016-857b-54e1-b83d-db4d58db5568"
@@ -28,6 +29,7 @@ DataFrames = "1"
 DifferentiationInterface = "0.7"
 Distances = "0.10"
 Distributions = "0.25"
+ExplicitImports = "1"
 ForwardDiff = "1"
 JET = "0.9, 0.10"
 Lux = "1"
diff --git a/test/checkby_Aqua_tests.jl b/test/checkby_Aqua_tests.jl
new file mode 100644
index 00000000..ffec5c16
--- /dev/null
+++ b/test/checkby_Aqua_tests.jl
@@ -0,0 +1,3 @@
+Test.@testset "CheckByAqua" begin
+    Aqua.test_all(ContinuousNormalizingFlows)
+end
diff --git a/test/checkby_ExplicitImports_tests.jl b/test/checkby_ExplicitImports_tests.jl
new file mode 100644
index 00000000..e4085485
--- /dev/null
+++ b/test/checkby_ExplicitImports_tests.jl
@@ -0,0 +1,23 @@
+Test.@testset "CheckByExplicitImports" begin
+    Test.@test isnothing(
+        ExplicitImports.check_no_implicit_imports(ContinuousNormalizingFlows),
+    )
+    Test.@test isnothing(
+        ExplicitImports.check_all_explicit_imports_via_owners(ContinuousNormalizingFlows),
+    )
+    Test.@test isnothing(
+        ExplicitImports.check_all_explicit_imports_are_public(ContinuousNormalizingFlows),
+    )
+    Test.@test isnothing(
+        ExplicitImports.check_no_stale_explicit_imports(ContinuousNormalizingFlows),
+    )
+    Test.@test isnothing(
+        ExplicitImports.check_all_qualified_accesses_via_owners(ContinuousNormalizingFlows),
+    )
+    Test.@test isnothing(
+        ExplicitImports.check_all_qualified_accesses_are_public(ContinuousNormalizingFlows),
+    )
+    Test.@test isnothing(
+        ExplicitImports.check_no_self_qualified_accesses(ContinuousNormalizingFlows),
+    )
+end
diff --git a/test/instability_tests.jl b/test/checkby_JET_tests.jl
similarity index 98%
rename from test/instability_tests.jl
rename to test/checkby_JET_tests.jl
index e8c52728..fe247500 100644
--- a/test/instability_tests.jl
+++ b/test/checkby_JET_tests.jl
@@ -1,4 +1,4 @@
-Test.@testset "Instability" begin
+Test.@testset "CheckByJET" begin
     JET.test_package(
         ContinuousNormalizingFlows;
         target_modules = [ContinuousNormalizingFlows],
diff --git a/test/quality_tests.jl b/test/quality_tests.jl
deleted file mode 100644
index 4f899c43..00000000
--- a/test/quality_tests.jl
+++ /dev/null
@@ -1,6 +0,0 @@
-Test.@testset "Quality" begin
-    Test.@testset "Method ambiguity" begin
-        Aqua.test_ambiguities(ContinuousNormalizingFlows)
-    end
-    Aqua.test_all(ContinuousNormalizingFlows; ambiguities = (GROUP == "All"))
-end
diff --git a/test/runtests.jl b/test/runtests.jl
index 70660594..23c12139 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -5,6 +5,7 @@ import ADTypes,
     DifferentiationInterface,
     Distances,
     Distributions,
+    ExplicitImports,
     ForwardDiff,
     JET,
     Logging,
@@ -34,15 +35,19 @@ Test.@testset "Overall" begin
         include("smoke_tests.jl")
     end
 
-    if GROUP == "All" || GROUP == "Quality"
-        include("quality_tests.jl")
+    if GROUP == "All" || GROUP == "Regression"
+        include("regression_tests.jl")
     end
 
-    if GROUP == "All" || GROUP == "Instability"
-        include("instability_tests.jl")
+    if GROUP == "All" || GROUP == "CheckByAqua"
+        include("checkby_Aqua_tests.jl")
     end
 
-    if GROUP == "All" || GROUP == "Regression"
-        include("regression_tests.jl")
+    if GROUP == "All" || GROUP == "CheckByJET"
+        include("checkby_JET_tests.jl")
+    end
+
+    if GROUP == "All" || GROUP == "CheckByExplicitImports"
+        include("checkby_ExplicitImports_tests.jl")
     end
 end