diff --git a/third_party/toolchains/preconfig/win/BUILD b/third_party/toolchains/preconfig/win/BUILD
index 519d8e5110d..d612636a834 100644
--- a/third_party/toolchains/preconfig/win/BUILD
+++ b/third_party/toolchains/preconfig/win/BUILD
@@ -14,8 +14,17 @@ platform(
         "@bazel_tools//platforms:x86_64",
         "@bazel_tools//platforms:windows",
     ],
-    exec_properties = {
-        "container-image": "docker://gcr.io/tensorflow-testing/tf-win2019-rbe@sha256:5e91ddd99345204cd8da2e687d312eb64b3916f257023fd1b651b3dabefd9286",
-        "OSFamily": "Windows",
-    },
+    remote_execution_properties = """
+        properties:{
+          name: "container-image"
+          value: "docker://gcr.io/tensorflow-testing/tf-win2019-rbe@sha256:5e91ddd99345204cd8da2e687d312eb64b3916f257023fd1b651b3dabefd9286"
+        }
+        properties:{
+          name: "OSFamily"
+          value: "Windows"
+        }
+        properties:{
+          name: "Pool" value: "win2019"
+        }
+        """,
 )
diff --git a/third_party/toolchains/preconfig/win_1803/BUILD b/third_party/toolchains/preconfig/win_1803/BUILD
index 4e315e8f086..94ac82d638c 100644
--- a/third_party/toolchains/preconfig/win_1803/BUILD
+++ b/third_party/toolchains/preconfig/win_1803/BUILD
@@ -14,10 +14,19 @@ platform(
         "@bazel_tools//platforms:x86_64",
         "@bazel_tools//platforms:windows",
     ],
-    exec_properties = {
-        "container-image": "docker://gcr.io/tensorflow-testing/tf-win-rbe@sha256:f109576c7c0c8a1783ff22b666e8923b52dbbe7933f69a1c7a7275202c304a12",
-        "OSFamily": "Windows",
-    },
+    remote_execution_properties = """
+        properties:{
+          name: "container-image"
+          value: "docker://gcr.io/tensorflow-testing/tf-win-rbe@sha256:f109576c7c0c8a1783ff22b666e8923b52dbbe7933f69a1c7a7275202c304a12"
+        }
+        properties:{
+          name: "OSFamily"
+          value: "Windows"
+        }
+        properties:{
+          name: "Pool" value: "default"
+        }
+        """,
 )
 
 platform(
@@ -26,9 +35,21 @@ platform(
         "@bazel_tools//platforms:x86_64",
         "@bazel_tools//platforms:windows",
     ],
-    exec_properties = {
-        "container-image": "",
-        "sandbox": "none",
-        "OSFamily": "Windows",
-    },
+    remote_execution_properties = """
+        properties:{
+          name: "container-image"
+          value: ""
+        }
+        properties:{
+          name: "sandbox"
+          value: "none"
+        }
+        properties:{
+          name: "OSFamily"
+          value: "Windows"
+        }
+        properties:{
+          name: "Pool" value: "default"
+        }
+        """,
 )