diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml
index 6ff4e30edb..cca114c29b 100644
--- a/.github/workflows/codecov.yml
+++ b/.github/workflows/codecov.yml
@@ -27,7 +27,7 @@ jobs:
         #       | paste -sd ',' -
         run: |
           cargo llvm-cov \
-            --features="arbitrary,async-io,aws-lc-rs,bloom,log,fast-apple-datapath,futures-io,json-output,lock_tracking,tracing-log,platform-verifier,qlog,ring,runtime-smol,runtime-tokio,rustls,rustls-aws-lc-rs,rustls-log,rustls-ring,serde,serde_json,smol,tracing" \
+            --features="arbitrary,aws-lc-rs,bloom,log,fast-apple-datapath,futures-io,json-output,lock_tracking,tracing-log,platform-verifier,qlog,ring,runtime-smol,runtime-tokio,rustls,rustls-aws-lc-rs,rustls-log,rustls-ring,serde,serde_json,smol,tracing" \
             --workspace --lcov --output-path lcov.info
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v5
diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 1ece9334d9..f584bef6cd 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -2,12 +2,16 @@ name: CI
 
 on:
   push:
-    branches: ['main', '0.8.x']
+    branches: ['main', '0.11.x']
   pull_request:
   merge_group:
   schedule:
     - cron: "21 3 * * 5"
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   test-freebsd:
   # see https://github.com/actions/runner/issues/385
diff --git a/docs/book/book.toml b/docs/book/book.toml
index afd3f955a4..50c80ee46e 100644
--- a/docs/book/book.toml
+++ b/docs/book/book.toml
@@ -1,6 +1,5 @@
 [book]
 authors = ["Timon Post"]
 language = "en"
-multilingual = false
 src = "src"
 title = "Quinn"