diff --git a/requirements-candidate.txt b/requirements-candidate.txt
index 2664f4a..e6ddaec 100644
--- a/requirements-candidate.txt
+++ b/requirements-candidate.txt
@@ -1258,9 +1258,9 @@ matplotlib==3.11.1 \
     #   scanpy
     #   seaborn
     #   torchgeo
-mcp==1.19.0 \
-    --hash=sha256:213de0d3cd63f71bc08ffe9cc8d4409cc87acffd383f6195d2ce0457c021b5c1 \
-    --hash=sha256:f5907fe1c0167255f916718f376d05f09a830a215327a3ccdd5ec8a519f2e572
+mcp==1.28.1 \
+    --hash=sha256:2726bca5e7193f61c5dde8b12500a6de2d9acf6d1a1c0be9e8c2e706437991df \
+    --hash=sha256:d51e36a5f5644faea4f85ea649bfffa6bc6c26770d42798ad6a3de3d2ba69683
     # via vllm
 mdurl==0.1.2 \
     --hash=sha256:84008a41e51615a49fc9966191ff91509e3c40b939176e643fd50a5c2196b8f8 \