diff --git a/Cargo.toml b/Cargo.toml
index 22f50559af6..b0b0b0d2ffe 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -179,7 +179,7 @@ gateway = ["flate2", "http", "utils"]
 http = []
 absolute_ratelimits = ["http"]
 model = ["builder", "http"]
-voice-model = ["serenity-voice-model"]
+voice_model = ["serenity-voice-model"]
 standard_framework = ["framework", "uwl", "levenshtein", "command_attr", "static_assertions"]
 unstable_discord_api = []
 utils = ["base64"]
@@ -188,7 +188,7 @@ tokio_task_builder = ["tokio/tracing"]
 time = []
 
 # Enables simd accelerated parsing
-simdjson = ["simd-json"]
+simd_json = ["simd-json"]
 
 # Enables temporary caching in functions that retrieve data via the HTTP API.
 temp_cache = ["cache", "moka"]
@@ -210,6 +210,10 @@ native_tls_backend = [
     "bytes",
 ]
 
+# TODO(next): Remove, these are deprecated aliases
+simdjson = ["simd_json"]
+voice-model = ["voice_model"]
+
 [package.metadata.docs.rs]
 features = ["default", "collector", "unstable_discord_api", "voice", "voice-model"]
 rustdoc-args = ["--cfg", "docsrs"]
diff --git a/README.md b/README.md
index 659e0a5791a..6ca0583d6ee 100644
--- a/README.md
+++ b/README.md
@@ -153,7 +153,7 @@ due to latency in the network. If you turn this feature on, it is recommended to
 synchronise your clock with an NTP server (such as Google's).
 - **tokio_task_builder**: Enables tokio's `tracing` feature and uses `tokio::task::Builder` to spawn tasks with names if `RUSTFLAGS="--cfg tokio_unstable"` is set.
 - **unstable_discord_api**: Enables features of the Discord API that do not have a stable interface. The features might not have official documentation or are subject to change.
-- **simdjson**: Enables SIMD accelerated JSON parsing and rendering for API calls, use with `RUSTFLAGS="-C target-cpu=native"`
+- **simd_json**: Enables SIMD accelerated JSON parsing and rendering for API calls, use with `RUSTFLAGS="-C target-cpu=native"`
 - **temp_cache**: Enables temporary caching in functions that retrieve data via the HTTP API.
 
 Serenity offers two TLS-backends, `rustls_backend` by default, you need to pick
diff --git a/build.rs b/build.rs
index 905a137f05f..8de1a0db18f 100644
--- a/build.rs
+++ b/build.rs
@@ -12,4 +12,19 @@ compile_error!(
     If you are unsure, go with `rustls_backend`."
 );
 
-fn main() {}
+#[cfg_attr(
+    feature = "simdjson",
+    deprecated = "The `simdjson` feature name is deprecated and will be removed in the next version of serenity, use `simd_json`."
+)]
+fn deprecated_simd_json_feature() {}
+
+#[cfg_attr(
+    feature = "voice-model",
+    deprecated = "The `voice-model` feature name is deprecated and will be removed in the next version of serenity, use `voice_model`."
+)]
+fn deprecated_voice_model_feature() {}
+
+fn main() {
+    deprecated_simd_json_feature();
+    deprecated_voice_model_feature()
+}