diff --git a/.github/workflows/base.yml b/.github/workflows/base.yml
index c01e7fb2..f7921b32 100644
--- a/.github/workflows/base.yml
+++ b/.github/workflows/base.yml
@@ -2,6 +2,8 @@ name: base
 
 env:
   RUST_BACKTRACE: 1
+  RUSTFLAGS: --cfg async_compression_unstable
+  RUSTDOCFLAGS: --cfg async_compression_unstable
 
 jobs:
   test:
@@ -15,20 +17,6 @@ jobs:
     - run: cargo --locked nextest run --workspace --all-features
     - run: cargo --locked test --workspace --doc --all-features
 
-  test-unstable:
-    name: cargo test --cfg async_compression_unstable
-    runs-on: ubuntu-latest
-    env:
-      RUSTFLAGS: --cfg async_compression_unstable
-      RUSTDOCFLAGS: --cfg async_compression_unstable
-    steps:
-    - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
-    - uses: actions-rust-lang/setup-rust-toolchain@166cdcfd11aee3cb47222f9ddb555ce30ddb9659 # v1.17.0
-    - uses: taiki-e/install-action@6a1bd70eaac3c8bdf093356838d7ee09fda951cf # v2.85.5
-      with: { tool: cargo-nextest }
-    - run: cargo --locked nextest run --workspace --all-features
-    - run: cargo --locked test --workspace --doc --all-features
-
 on:
   push:
     branches: [main]
diff --git a/.github/workflows/exhaustive.yml b/.github/workflows/exhaustive.yml
index a0dc9daa..f844b7bd 100644
--- a/.github/workflows/exhaustive.yml
+++ b/.github/workflows/exhaustive.yml
@@ -2,6 +2,8 @@ name: exhaustive
 
 env:
   RUST_BACKTRACE: 1
+  RUSTFLAGS: --cfg async_compression_unstable
+  RUSTDOCFLAGS: --cfg async_compression_unstable
 
 jobs:
   test:
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 138fd137..a2dc6f72 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -2,6 +2,8 @@ name: lint
 
 env:
   RUST_BACKTRACE: 1
+  RUSTFLAGS: --cfg async_compression_unstable
+  RUSTDOCFLAGS: --cfg async_compression_unstable
 
 jobs:
   fmt:
@@ -21,9 +23,6 @@ jobs:
     - uses: actions-rust-lang/setup-rust-toolchain@ecabd13d1c56bd1345c230e542e9144811ad706f # v2.0.0
       with: { components: clippy }
     - run: cargo --locked clippy --no-deps --all --all-targets --all-features -- -D warnings
-    - run: cargo --locked clippy --no-deps --all --all-targets --all-features -- -D warnings
-      env:
-        RUSTFLAGS: --cfg async_compression_unstable
 
 on:
   push:
diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 6c7ad9cc..bad878d5 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -2,6 +2,8 @@ name: nightly
 
 env:
   RUST_BACKTRACE: 1
+  RUSTFLAGS: --cfg async_compression_unstable
+  RUSTDOCFLAGS: --cfg async_compression_unstable
 
 jobs:
   test:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index ed25c447..33b993f3 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -5,6 +5,10 @@ permissions:
   contents: write
   id-token: write
 
+env:
+  RUSTFLAGS: --cfg async_compression_unstable
+  RUSTDOCFLAGS: --cfg async_compression_unstable
+
 on:
   push:
     branches:
diff --git a/.github/workflows/wasi.yml b/.github/workflows/wasi.yml
index 61ecd4b6..59213b98 100644
--- a/.github/workflows/wasi.yml
+++ b/.github/workflows/wasi.yml
@@ -2,6 +2,8 @@ name: wasi
 
 env:
   RUST_BACKTRACE: 1
+  RUSTFLAGS: --cfg async_compression_unstable
+  RUSTDOCFLAGS: --cfg async_compression_unstable
 
 jobs:
   build:
@@ -21,7 +23,7 @@ jobs:
         mkdir -p wasi-sysroot
         tar xf wasi-sysroot-*.tar.gz --strip-components=1 -C wasi-sysroot
     - run: |
-        cargo +nightly check --lib --features all-implementations,brotli,bzip2,deflate,gzip,lz4,lzma,xz,zlib,zstd,deflate64 --target wasm32-wasip1-threads
+        cargo +nightly check --lib --features all-implementations,brotli,brotli-mbrotli,bzip2,deflate,gzip,lz4,lzma,xz,zlib,zstd,deflate64 --target wasm32-wasip1-threads
       env:
         CFLAGS_wasm32_wasip1_threads: --sysroot=${{ github.workspace }}/wasi-sysroot -I${{ github.workspace }}/wasi-sysroot/include/wasm32-wasip1-threads -L-I${{ github.workspace }}/wasi-sysroot/lib/wasm32-wasip1-threads
 
diff --git a/justfile b/justfile
index 756131c4..59ea4c4a 100644
--- a/justfile
+++ b/justfile
@@ -1,3 +1,6 @@
+export RUSTFLAGS := "--cfg async_compression_unstable"
+export RUSTDOCFLAGS := RUSTFLAGS + "--cfg=docsrs -Dwarnings"
+
 _list:
     @just --list
 
@@ -19,7 +22,7 @@ clippy:
 
 # Document crates in workspace.
 doc *args:
-    RUSTDOCFLAGS="--cfg=docsrs -Dwarnings" cargo +nightly doc --workspace --all-features {{ args }}
+    cargo +nightly doc --workspace --all-features {{ args }}
 
 # Checks feature combinations for `tokio|futures-io` async runtime.
 check-features async_runtime: