diff --git a/rust/bridge/ffi/Cargo.toml b/rust/bridge/ffi/Cargo.toml
index 8de687fa0f..9e08c51d96 100644
--- a/rust/bridge/ffi/Cargo.toml
+++ b/rust/bridge/ffi/Cargo.toml
@@ -14,6 +14,9 @@ license = "AGPL-3.0-only"
 name = "signal_ffi"
 crate-type = ["staticlib"]
 
+[features]
+nightly = ["signal-crypto/nightly", "libsignal-protocol/nightly"]
+
 [dependencies]
 libsignal-protocol = { path = "../../protocol" }
 device-transfer = { path = "../../device-transfer" }
diff --git a/rust/bridge/jni/Cargo.toml b/rust/bridge/jni/Cargo.toml
index 9702b79a0d..f6e9606a59 100644
--- a/rust/bridge/jni/Cargo.toml
+++ b/rust/bridge/jni/Cargo.toml
@@ -14,6 +14,9 @@ license = "AGPL-3.0-only"
 name = "signal_jni"
 crate-type = ["cdylib"]
 
+[features]
+nightly = ["libsignal-protocol/nightly", "signal-crypto/nightly"]
+
 [dependencies]
 libsignal-protocol = { path = "../../protocol" }
 signal-crypto = { path = "../../crypto" }
diff --git a/rust/bridge/node/Cargo.toml b/rust/bridge/node/Cargo.toml
index 50f8d6b425..293098b894 100644
--- a/rust/bridge/node/Cargo.toml
+++ b/rust/bridge/node/Cargo.toml
@@ -14,6 +14,9 @@ edition = "2018"
 name = "signal_node"
 crate-type = ["cdylib"]
 
+[features]
+nightly = ["libsignal-protocol/nightly", "libsignal-bridge/nightly"]
+
 [dependencies]
 libsignal-protocol = { path = "../../protocol" }
 libsignal-bridge = { path = "../shared", features = ["node"] }
diff --git a/rust/bridge/shared/Cargo.toml b/rust/bridge/shared/Cargo.toml
index f713e55d5b..6d49322426 100644
--- a/rust/bridge/shared/Cargo.toml
+++ b/rust/bridge/shared/Cargo.toml
@@ -34,3 +34,4 @@ signal-neon-futures = { path = "../node/futures", optional = true }
 ffi = ["libc", "libsignal-bridge-macros/ffi"]
 jni = ["jni_crate", "libsignal-bridge-macros/jni"]
 node = ["neon", "linkme", "signal-neon-futures", "libsignal-bridge-macros/node"]
+nightly = ["signal-crypto/nightly", "libsignal-protocol/nightly"]
diff --git a/rust/crypto/Cargo.toml b/rust/crypto/Cargo.toml
index df5364c4bc..a41ee4c593 100644
--- a/rust/crypto/Cargo.toml
+++ b/rust/crypto/Cargo.toml
@@ -20,6 +20,9 @@ rand = "0.7.3"
 sha-1 = "0.9"
 sha2 = "0.9"
 
+[features]
+nightly = []
+
 [target.'cfg(all(target_arch = "aarch64", any(target_os = "linux")))'.dependencies]
 libc = "0.2" # for getauxval
 
diff --git a/rust/crypto/src/lib.rs b/rust/crypto/src/lib.rs
index b33e2b6f53..47b0a80745 100644
--- a/rust/crypto/src/lib.rs
+++ b/rust/crypto/src/lib.rs
@@ -3,8 +3,11 @@
 // SPDX-License-Identifier: AGPL-3.0-only
 //
 
-#![cfg_attr(target_arch = "aarch64", feature(stdsimd))]
-#![cfg_attr(target_arch = "aarch64", feature(aarch64_target_feature))]
+#![cfg_attr(all(target_arch = "aarch64", feature = "nightly"), feature(stdsimd))]
+#![cfg_attr(
+    all(target_arch = "aarch64", feature = "nightly"),
+    feature(aarch64_target_feature)
+)]
 #![deny(clippy::unwrap_used)]
 
 mod error;
diff --git a/rust/crypto/src/polyval.rs b/rust/crypto/src/polyval.rs
index 849f7fbe7f..fa7b916fbf 100644
--- a/rust/crypto/src/polyval.rs
+++ b/rust/crypto/src/polyval.rs
@@ -10,7 +10,7 @@ mod polyval_soft;
 #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
 mod polyval_clmul;
 
-#[cfg(target_arch = "aarch64")]
+#[cfg(all(target_arch = "aarch64", feature = "nightly"))]
 mod polyval_pmul;
 
 #[derive(Clone)]
@@ -18,7 +18,7 @@ pub enum Polyval {
     Soft(polyval_soft::PolyvalSoft),
     #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
     Clmul(polyval_clmul::PolyvalClmul),
-    #[cfg(target_arch = "aarch64")]
+    #[cfg(all(target_arch = "aarch64", feature = "nightly"))]
     Pmul(polyval_pmul::PolyvalPmul),
 }
 
@@ -35,7 +35,7 @@ impl Polyval {
             }
         }
 
-        #[cfg(target_arch = "aarch64")]
+        #[cfg(all(target_arch = "aarch64", feature = "nightly"))]
         {
             if crate::cpuid::has_armv8_crypto() {
                 return Ok(Polyval::Pmul(polyval_pmul::PolyvalPmul::new(key)?));
@@ -54,7 +54,7 @@ impl Polyval {
             Polyval::Soft(polyval) => polyval.update(data),
             #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
             Polyval::Clmul(polyval) => polyval.update(data),
-            #[cfg(target_arch = "aarch64")]
+            #[cfg(all(target_arch = "aarch64", feature = "nightly"))]
             Polyval::Pmul(polyval) => polyval.update(data),
         }
     }
@@ -64,7 +64,7 @@ impl Polyval {
             Polyval::Soft(polyval) => polyval.update_padded(data),
             #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
             Polyval::Clmul(polyval) => polyval.update_padded(data),
-            #[cfg(target_arch = "aarch64")]
+            #[cfg(all(target_arch = "aarch64", feature = "nightly"))]
             Polyval::Pmul(polyval) => polyval.update_padded(data),
         }
     }
@@ -74,7 +74,7 @@ impl Polyval {
             Polyval::Soft(polyval) => polyval.finalize(),
             #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
             Polyval::Clmul(polyval) => polyval.finalize(),
-            #[cfg(target_arch = "aarch64")]
+            #[cfg(all(target_arch = "aarch64", feature = "nightly"))]
             Polyval::Pmul(polyval) => polyval.finalize(),
         }
     }
diff --git a/rust/protocol/Cargo.toml b/rust/protocol/Cargo.toml
index 59dc5c72e7..1fd6ae95a0 100644
--- a/rust/protocol/Cargo.toml
+++ b/rust/protocol/Cargo.toml
@@ -40,7 +40,7 @@ default = ["u64_backend"]
 u32_backend = ["curve25519-dalek/u32_backend"]
 u64_backend = ["curve25519-dalek/u64_backend"]
 simd_backend = ["curve25519-dalek/simd_backend"]
-nightly = ["curve25519-dalek/nightly"]
+nightly = ["curve25519-dalek/nightly", "signal-crypto/nightly"]
 
 [dev-dependencies]
 criterion = "0.3"