diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 96cf37f6a..5526d2e74 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -64,10 +64,10 @@ jobs:
       - uses: Swatinem/rust-cache@v2
       # Prevent feature unification from selecting *ring* as the crypto provider
       - run: RUST_BACKTRACE=1 cargo test --manifest-path quinn-proto/Cargo.toml --no-default-features --features rustls-aws-lc-rs
-      - run: RUST_BACKTRACE=1 cargo test --manifest-path quinn/Cargo.toml --no-default-features --features rustls-aws-lc-rs,runtime-tokio
+      - run: RUST_BACKTRACE=1 cargo test --manifest-path quinn/Cargo.toml --no-default-features --features rustls-aws-lc-rs,runtime-tokio,__rustls-post-quantum-test
       # FIPS
       - run: RUST_BACKTRACE=1 cargo test --manifest-path quinn-proto/Cargo.toml --no-default-features --features rustls-aws-lc-rs-fips
-      - run: RUST_BACKTRACE=1 cargo test --manifest-path quinn/Cargo.toml --no-default-features --features rustls-aws-lc-rs-fips,runtime-tokio
+      - run: RUST_BACKTRACE=1 cargo test --manifest-path quinn/Cargo.toml --no-default-features --features rustls-aws-lc-rs-fips,__rustls-post-quantum-test,runtime-tokio
 
   msrv:
     runs-on: ubuntu-latest
@@ -174,7 +174,7 @@ jobs:
     env:
       RUSTFLAGS: -Dwarnings
       # skip FIPS features outside of Linux
-      SKIP_FEATURES: ${{ matrix.os != 'ubuntu-latest' && 'rustls-aws-lc-rs-fips,aws-lc-rs-fips' || '' }}
+      SKIP_FEATURES: ${{ matrix.os != 'ubuntu-latest' && 'rustls-aws-lc-rs-fips,aws-lc-rs-fips,__rustls-post-quantum-test' || '' }}
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
diff --git a/quinn/Cargo.toml b/quinn/Cargo.toml
index fb05280f9..f34c07e2b 100644
--- a/quinn/Cargo.toml
+++ b/quinn/Cargo.toml
@@ -39,6 +39,11 @@ runtime-smol = ["async-io", "smol"]
 # Configure `tracing` to log events via `log` if no `tracing` subscriber exists.
 log = ["tracing/log", "proto/log", "udp/log"]
 
+# Internal (PRIVATE!) features used to aid testing.
+# Don't rely on these whatsoever. They may disappear at any time.
+
+__rustls-post-quantum-test =  ["dep:rustls-post-quantum", "rustls-aws-lc-rs"]
+
 [dependencies]
 async-io = { workspace = true, optional = true }
 async-std = { workspace = true, optional = true }
@@ -49,6 +54,7 @@ rustc-hash = { workspace = true }
 pin-project-lite = { workspace = true }
 proto = { package = "quinn-proto", path = "../quinn-proto", version = "0.11.7", default-features = false }
 rustls = { workspace = true, optional = true }
+rustls-post-quantum = { workspace = true, optional = true }
 smol = { workspace = true, optional = true }
 socket2 = { workspace = true }
 thiserror = { workspace = true }
@@ -64,7 +70,6 @@ directories-next = { workspace = true }
 rand = { workspace = true }
 rcgen = { workspace = true }
 rustls-pemfile = { workspace = true }
-rustls-post-quantum = { workspace = true }
 clap = { workspace = true }
 tokio = { workspace = true, features = ["rt", "rt-multi-thread", "time", "macros"] }
 tracing-subscriber = { workspace = true }
@@ -93,7 +98,7 @@ required-features = ["rustls-ring"]
 
 [[test]]
 name = "post_quantum"
-required-features = ["rustls-aws-lc-rs"]
+required-features = ["__rustls-post-quantum-test"]
 
 [[bench]]
 name = "bench"