diff --git a/.github/workflows/rust-sdk-tests.yml b/.github/workflows/rust-sdk-tests.yml
index 23e686eb7..f75a5d6a2 100644
--- a/.github/workflows/rust-sdk-tests.yml
+++ b/.github/workflows/rust-sdk-tests.yml
@@ -159,6 +159,9 @@ jobs:
           toolchain: "1.94.0"
 
       - uses: Swatinem/rust-cache@v2
+        # Cache is only an optimization; the Windows bundled smoke test should
+        # not fail when rust-cache's post-job save flakes after a successful build.
+        continue-on-error: ${{ runner.os == 'Windows' }}
         with:
           workspaces: "rust"
           key: bundled-cli
diff --git a/rust/Cargo.lock b/rust/Cargo.lock
index 1676f2f91..8d8efffca 100644
--- a/rust/Cargo.lock
+++ b/rust/Cargo.lock
@@ -1088,9 +1088,9 @@ dependencies = [
 
 [[package]]
 name = "tar"
-version = "0.4.45"
+version = "0.4.46"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "22692a6476a21fa75fdfc11d452fda482af402c008cdbaf3476414e122040973"
+checksum = "3f6221d9a6003c78398e3b239969f352578258df48c8eb051caadae0015bc840"
 dependencies = [
  "filetime",
  "libc",