diff --git a/.github/workflows/Test-GPU.yml b/.github/workflows/Test-GPU.yml
index 508da480..aa30a5fc 100644
--- a/.github/workflows/Test-GPU.yml
+++ b/.github/workflows/Test-GPU.yml
@@ -24,7 +24,7 @@ jobs:
       JULIA_SMC_TEST_GROUP: 'GPU'
     strategy:
       matrix:
-        julia-version: ['1.10', '1.11']
+        julia-version: ['lts', '1']
     steps:
       - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@v2
@@ -32,7 +32,7 @@ jobs:
           version: ${{ matrix.julia-version }}
           arch: x64
       - uses: julia-actions/julia-downgrade-compat@v2
-        if: ${{ matrix.version == '1.10' }}
+        if: ${{ matrix.version == 'lts' }}
         with:
           skip: LinearAlgebra, Random, SparseArrays
       - uses: julia-actions/cache@v2
diff --git a/test/Project.toml b/test/Project.toml
index 284f410b..4c505efa 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -23,3 +23,6 @@ SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 SparseMatrixColorings = "0a514795-09f3-496d-8182-132a7b665d35"
 StableRNGs = "860ef19b-820b-49d6-a774-d7a799459cd3"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+
+[compat]
+CUDA = "=5.9.5"