diff --git a/test/gpu/LocalPreferences.toml b/test/gpu/LocalPreferences.toml
new file mode 100644
index 00000000..b65c691f
--- /dev/null
+++ b/test/gpu/LocalPreferences.toml
@@ -0,0 +1,7 @@
+[CUDA_Runtime_jll]
+version = "12.6"
+
+[CUDA_Driver_jll]
+# Disable forward-compat driver — V100 runners need the system driver
+# since CUDA_Driver_jll v13+ drops compute capability 7.0 support
+compat = "false"
diff --git a/test/gpu/Project.toml b/test/gpu/Project.toml
index 18ce094b..608a8dca 100644
--- a/test/gpu/Project.toml
+++ b/test/gpu/Project.toml
@@ -1,5 +1,7 @@
 [deps]
 CUDA = "052768ef-5323-5732-b1bb-66c8b64840ba"
+CUDA_Driver_jll = "4ee394cb-3365-5eb0-8335-949819d2adfc"
+CUDA_Runtime_jll = "76a88914-d11a-5bdc-97e0-2f5a05c973a2"
 
 [compat]
-CUDA = "3.12, 4, 5"
+CUDA = "4, 5"