diff --git a/.buildkite/pipeline.yml b/.buildkite/pipeline.yml
index 83595dff..58abe692 100644
--- a/.buildkite/pipeline.yml
+++ b/.buildkite/pipeline.yml
@@ -9,7 +9,7 @@ steps:
             - "src/**"
             - "ext/QuantumToolboxCUDAExt.jl"
             - "test/runtests.jl"
-            - "test/ext-test/cuda_ext.jl"
+            - "test/ext-test/gpu/**"
             - "Project.toml"
           target: ".buildkite/CUDA_Ext.yml"
     agents:
diff --git a/Project.toml b/Project.toml
index 8921bce9..35b9ff0f 100644
--- a/Project.toml
+++ b/Project.toml
@@ -33,6 +33,7 @@ CUDA = "052768ef-5323-5732-b1bb-66c8b64840ba"
 QuantumToolboxCUDAExt = "CUDA"
 
 [compat]
+Aqua = "0.8"
 ArrayInterface = "6, 7"
 CUDA = "5"
 DiffEqBase = "6"
@@ -42,6 +43,7 @@ Distributed = "1"
 FFTW = "1.5"
 Graphs = "1.7"
 IncompleteLU = "0.2"
+JET = "0.9"
 LinearAlgebra = "1"
 LinearSolve = "2"
 OrdinaryDiffEqCore = "1"
@@ -59,8 +61,9 @@ Test = "1"
 julia = "1.10"
 
 [extras]
-CUDA = "052768ef-5323-5732-b1bb-66c8b64840ba"
+Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
+JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["Test"]
+test = ["Aqua", "JET", "Test"]
diff --git a/test/core-test/code_quality.jl b/test/core-test/code_quality.jl
index 724639a3..5effb97d 100644
--- a/test/core-test/code_quality.jl
+++ b/test/core-test/code_quality.jl
@@ -1,5 +1,3 @@
-using Aqua, JET
-
 @testset "Code quality" verbose = true begin
     @testset "Aqua.jl" begin
         Aqua.test_all(QuantumToolbox; ambiguities = false, unbound_args = false)
diff --git a/test/ext-test/gpu/Project.toml b/test/ext-test/gpu/Project.toml
new file mode 100644
index 00000000..63ad2aa7
--- /dev/null
+++ b/test/ext-test/gpu/Project.toml
@@ -0,0 +1,6 @@
+[deps]
+CUDA = "052768ef-5323-5732-b1bb-66c8b64840ba"
+QuantumToolbox = "6c2fb7c5-b903-41d2-bc5e-5a7c320b9fab"
+
+[compat]
+CUDA = "5"
\ No newline at end of file
diff --git a/test/ext-test/cuda_ext.jl b/test/ext-test/gpu/cuda_ext.jl
similarity index 97%
rename from test/ext-test/cuda_ext.jl
rename to test/ext-test/gpu/cuda_ext.jl
index f8c7f1f8..20219b42 100644
--- a/test/ext-test/cuda_ext.jl
+++ b/test/ext-test/gpu/cuda_ext.jl
@@ -1,10 +1,3 @@
-using CUDA
-using CUDA.CUSPARSE
-CUDA.allowscalar(false) # Avoid unexpected scalar indexing
-
-QuantumToolbox.about()
-CUDA.versioninfo()
-
 @testset "CUDA Extension" verbose = true begin
     ψdi = Qobj(Int64[1, 0])
     ψdf = Qobj(Float64[1, 0])
diff --git a/test/runtests.jl b/test/runtests.jl
index e188cd8a..20f72b05 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -1,10 +1,5 @@
 using Test
 using Pkg
-using QuantumToolbox
-using QuantumToolbox: position, momentum
-using Random
-using SciMLOperators
-import SciMLOperators: ScaledOperator
 
 const GROUP = get(ENV, "GROUP", "All")
 
@@ -32,11 +27,18 @@ core_tests = [
 ]
 
 if (GROUP == "All") || (GROUP == "Code-Quality")
-    Pkg.add(["Aqua", "JET"])
+    using QuantumToolbox
+    using Aqua, JET
+
     include(joinpath(testdir, "core-test", "code_quality.jl"))
 end
 
 if (GROUP == "All") || (GROUP == "Core")
+    using QuantumToolbox
+    import QuantumToolbox: position, momentum
+    import Random: MersenneTwister
+    import SciMLOperators: MatrixOperator
+
     QuantumToolbox.about()
 
     for test in core_tests
@@ -45,6 +47,17 @@ if (GROUP == "All") || (GROUP == "Core")
 end
 
 if (GROUP == "CUDA_Ext")# || (GROUP == "All")
-    Pkg.add("CUDA")
-    include(joinpath(testdir, "ext-test", "cuda_ext.jl"))
+    Pkg.activate("ext-test/gpu")
+    Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
+    Pkg.instantiate()
+
+    using QuantumToolbox
+    using CUDA
+    using CUDA.CUSPARSE
+    CUDA.allowscalar(false) # Avoid unexpected scalar indexing
+
+    QuantumToolbox.about()
+    CUDA.versioninfo()
+
+    include(joinpath(testdir, "ext-test", "gpu", "cuda_ext.jl"))
 end