diff --git a/apps/backend/Dockerfile b/apps/backend/Dockerfile
index 426aa4450..5b862166c 100644
--- a/apps/backend/Dockerfile
+++ b/apps/backend/Dockerfile
@@ -22,7 +22,7 @@
 # 含まれず、ここでの指定が唯一の版指定になる（rust-toolchain.toml を上げても自動追従しない）。
 
 ########## builder 共通 ##########
-FROM rust:1.95-bookworm AS builder-base
+FROM rust:1.97-bookworm AS builder-base
 # .cargo/config.toml が Linux ビルドで mold リンカ（-fuse-ld=mold）を要求する
 RUN apt-get update \
     && apt-get install -y --no-install-recommends mold \
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 6360c1888..8565ca6bc 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "1.95.0"
+channel = "1.97.1"
 components = ["rustfmt", "clippy"]