diff --git a/tests/models/multimodal/pooling/test_colqwen3.py b/tests/models/multimodal/pooling/test_colqwen3.py
index 2faac7fbfb..a9857bf4bd 100644
--- a/tests/models/multimodal/pooling/test_colqwen3.py
+++ b/tests/models/multimodal/pooling/test_colqwen3.py
@@ -45,7 +45,9 @@ TEXT_DOCUMENTS = [
 ]
 
 DTYPE = "half"
-GPU_MEMORY_UTILIZATION = 0.7
+# The Tomoro model needs room for its vision encoder and a 4096-token KV cache
+# on the 16 GiB devices used by the H200 MIG test lane.
+GPU_MEMORY_UTILIZATION = 0.8
 
 
 def _make_base64_image(