diff --git a/GOMC_REST_VERSION b/GOMC_REST_VERSION
index b7c0a9b..a20e2d8 100644
--- a/GOMC_REST_VERSION
+++ b/GOMC_REST_VERSION
@@ -1 +1 @@
-v1.6.0
+v1.7.0
diff --git a/README.md b/README.md
index d767cd3..685ad9b 100644
--- a/README.md
+++ b/README.md
@@ -107,12 +107,12 @@ boundary is the trust boundary here.
 
 ## Versions
 
-This package bundles a pinned `gomc-rest` binary (currently **v1.6.0**, set in
+This package bundles a pinned `gomc-rest` binary (currently **v1.7.0**, set in
 `GOMC_REST_VERSION`) that must satisfy `gomc-rest-client`'s
 `MINIMUM_SUPPORTED_GOMC_REST_VERSION`; `launch()` verifies this on startup. The
-`gomc-rest-client` dependency is capped (`>=0.10.0,<0.11`) so a future client
-that raises its minimum server version can't be installed without also bumping
-the bundled binary.
+`gomc-rest-client` dependency is capped (`>=1.0,<2`) so a breaking client
+release can't be pulled in silently. If a 1.x client ever requires a newer
+server than the bundled one, `launch()` fails at startup with a clear error.
 
 ## Development
 
diff --git a/README_JP.md b/README_JP.md
index 2e1743a..4bfa337 100644
--- a/README_JP.md
+++ b/README_JP.md
@@ -117,13 +117,14 @@ finally:
 ## バージョン
 
 同梱するgomc-restのバージョンは `GOMC_REST_VERSION` で固定しています
-（現在は **v1.6.0**）。`launch()` は起動時に、サーバーが
+（現在は **v1.7.0**）。`launch()` は起動時に、サーバーが
 `gomc-rest-client` の `MINIMUM_SUPPORTED_GOMC_REST_VERSION` を満たしているか
 確認します。
 
-`gomc-rest-client` の依存バージョンも `>=0.10.0,<0.11` に制限しています。
-これにより、より新しいサーバーを必要とするクライアントが意図せず
-インストールされることを防ぎます。
+`gomc-rest-client` の依存バージョンは `>=1.0,<2` に制限しています
+（破壊的変更はメジャーバージョンで入るため）。仮に 1.x のクライアントが
+同梱サーバーより新しいバージョンを要求するようになった場合は、
+`launch()` が起動時に明確なエラーで停止します。
 
 ## 開発者向け
 
diff --git a/checksums/v1.7.0.sha256 b/checksums/v1.7.0.sha256
new file mode 100644
index 0000000..dc2eaf4
--- /dev/null
+++ b/checksums/v1.7.0.sha256
@@ -0,0 +1,5 @@
+c8cf8beab397aacb09a11d80bd32d81b12e43cd22bd0b7885effdbeb9c2ddbc7  gomc-rest.exe
+94080d929c15dc5d4b6af3bd02448bf08f535d6a55b224c8bc4793696cf1da33  gomc-rest-linux-amd64
+6614ec9a9dc3a8c9ecfa01b7ce56ce1d2f89a2f0e06711eac51001cbc0fe70c4  gomc-rest-linux-arm64
+55e7aa929149d2ad81c37b0eb08d087821dee77faa4ecbc5e8bb6a97ff44a7c3  gomc-rest-darwin-amd64
+a4059a9303a06bda79e08ebc34224514a6899dd58a1a099605ed66d7a0597181  gomc-rest-darwin-arm64
diff --git a/pyproject.toml b/pyproject.toml
index 973e179..f9a5bda 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,10 +17,11 @@ keywords = ["mitsubishi", "plc", "mc-protocol", "slmp", "gomc-rest"]
 # HTTP layer is delegated to gomc-rest-client (pattern A). We only add the
 # bundled-binary + subprocess lifecycle on top.
 dependencies = [
-    # Cap the client to a range known to accept the bundled server version
-    # (GOMC_REST_VERSION). A future client that raises its minimum server
-    # version must not be pulled in without bumping the bundled binary too.
-    "gomc-rest-client>=0.10.0,<0.11",
+    # Cap at the next major: the client follows semver from 1.0, so breaking
+    # API changes land in 2.x. If a 1.x release raises its minimum server
+    # version above the bundled one, launch() still fails loudly at startup
+    # via is_supported_version(), which is the backstop for that case.
+    "gomc-rest-client>=1.0,<2",
 ]
 
 [project.urls]