diff --git a/pyproject.toml b/pyproject.toml
index e95017eb75..bd912ba23a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,6 +4,9 @@ requires = [
     "wheel",
     # On Windows, use the CasADi vcpkg registry and CMake bundled from MSVC
     "casadi>=3.6.3; platform_system!='Windows'",
+    # Note: the version of CasADi as a build-time dependency should be matched
+    # cross platforms, so updates to its minimum version here should be accompanied
+    # by a version bump in https://github.com/pybamm-team/casadi-vcpkg-registry.
     "cmake; platform_system!='Windows'",
     ]
 build-backend = "setuptools.build_meta"
diff --git a/vcpkg-configuration.json b/vcpkg-configuration.json
index 8ab4e738fc..f33d9205b0 100644
--- a/vcpkg-configuration.json
+++ b/vcpkg-configuration.json
@@ -13,7 +13,7 @@
     {
       "kind": "git",
       "repository": "https://github.com/pybamm-team/casadi-vcpkg-registry.git",
-      "baseline": "70f49f3c22fee4874fb8a36ef1a559f2c185ef1f",
+      "baseline": "baa26c2e629ea18fbb1aefa7d27c6612c4068fa7",
       "packages": ["casadi"]
     }
   ]