diff --git a/README.md b/README.md
index 5f9082a..dd16173 100644
--- a/README.md
+++ b/README.md
@@ -117,16 +117,17 @@ cargo run -- imported.agnd --import tasks.ics
 ## Development quality gate
 
 Compiler warnings are denied by project configuration. Before accepting any
-change, run the complete gate:
+change, install the pinned Antislop release and run the complete gate:
 
 ```sh
+cargo install antislop --version 0.3.0 --locked
 ./scripts/quality-gate.sh
 ```
 
 It requires clean `cargo fmt --check` output, runs Clippy across every target and
-feature with `-D warnings`, executes all tests, builds warning-free documentation,
-and produces the release binary. Any warning, formatting difference, test failure,
-or build failure stops the gate.
+feature with `-D warnings`, rejects Antislop findings, executes all tests, builds
+warning-free documentation, and produces the release binary. Any finding, warning,
+formatting difference, test failure, or build failure stops the gate.
 
 ## Essential keys
 
diff --git a/scripts/quality-gate.sh b/scripts/quality-gate.sh
index 9c6ad15..7aca809 100755
--- a/scripts/quality-gate.sh
+++ b/scripts/quality-gate.sh
@@ -8,6 +8,14 @@ cargo fmt --all -- --check
 # and automated Clippy runs have the same, visible contract.
 cargo clippy --all-targets --all-features -- -D warnings
 
+antislop_version=0.3.0
+if ! command -v antislop >/dev/null 2>&1 ||
+    [[ "$(antislop --version)" != "antislop ${antislop_version}" ]]; then
+    echo "antislop ${antislop_version} is required; install it with: cargo install antislop --version ${antislop_version} --locked" >&2
+    exit 1
+fi
+antislop .
+
 cargo test --all-targets --all-features
 RUSTDOCFLAGS="-D warnings" cargo doc --no-deps --all-features
 cargo build --release --all-targets --all-features