diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ce668039..2dfbeef4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,5 +20,5 @@ jobs:
     - if: matrix.rust != 'nightly'
       run: cargo clippy --all-features -- -D warnings
     - run: cargo build --no-default-features --verbose
-    - run: cargo test --all-features --verbose
+    - run: cargo test --features="master resolv resolv-sync sign tsig validate" --verbose
 
diff --git a/Cargo.toml b/Cargo.toml
index e364b8b9..2de93a5c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,6 +27,8 @@ smallvec       = { version = "1.2", optional = true }
 tokio          = { version = "0.2.13", optional = true, features = ["io-util", "macros", "tcp", "time", "udp"] }
 
 [features]
+# If you add a feature here, also add it to .github/workflows/ci.yml for the
+# cargo test run. Only interop must not be present.
 default     = ["std"]
 interop     = ["bytes", "ring"]
 master      = ["std", "bytes", "chrono"]