diff --git a/app/gui/controller/engine-protocol/Cargo.toml b/app/gui/controller/engine-protocol/Cargo.toml
index 20b44231b78..ce49c07d3e8 100644
--- a/app/gui/controller/engine-protocol/Cargo.toml
+++ b/app/gui/controller/engine-protocol/Cargo.toml
@@ -11,10 +11,7 @@ crate-type = ["cdylib", "rlib"]
 chrono = { version = "0.4", features = ["serde"] }
 enso-data-structures = { path = "../../../../lib/rust/data-structures" }
 enso-logger = { path = "../../../../lib/rust/logger" }
-enso-prelude = { path = "../../../../lib/rust/prelude", features = [
-  "serde",
-  "serde_json"
-] }
+enso-prelude = { path = "../../../../lib/rust/prelude" }
 enso-shapely = { path = "../../../../lib/rust/shapely" }
 enso-text = { path = "../../../../lib/rust/text" }
 failure = { version = "0.1.8" }
diff --git a/app/gui/language/parser/Cargo.toml b/app/gui/language/parser/Cargo.toml
index 3458b005d85..2fa821e97d7 100644
--- a/app/gui/language/parser/Cargo.toml
+++ b/app/gui/language/parser/Cargo.toml
@@ -11,10 +11,7 @@ crate-type = ["cdylib", "rlib"]
 [dependencies]
 ast = { path = "../ast/impl" }
 enso-data-structures = { path = "../../../../lib/rust/data-structures" }
-enso-prelude = { path = "../../../../lib/rust/prelude", features = [
-  "serde",
-  "serde_json"
-] }
+enso-prelude = { path = "../../../../lib/rust/prelude" }
 enso-profiler = { path = "../../../../lib/rust/profiler" }
 enso-text = { path = "../../../../lib/rust/text" }
 console_error_panic_hook = { version = "0.1.6" }
diff --git a/app/gui/view/graph-editor/Cargo.toml b/app/gui/view/graph-editor/Cargo.toml
index 3afad14fdcf..2838afb40a8 100644
--- a/app/gui/view/graph-editor/Cargo.toml
+++ b/app/gui/view/graph-editor/Cargo.toml
@@ -15,7 +15,7 @@ bimap = { version = "0.4.0" }
 enso-config = { version = "0.1.0", path = "../../config" }
 enso-frp = { version = "0.1.0", path = "../../../../lib/rust/frp" }
 enso-logger = { path = "../../../../lib/rust/logger" }
-enso-prelude = { path = "../../../../lib/rust/prelude", features = ["serde"] }
+enso-prelude = { path = "../../../../lib/rust/prelude" }
 engine-protocol = { version = "0.1.0", path = "../../controller/engine-protocol" }
 enso-shapely = { path = "../../../../lib/rust/shapely" }
 enso-text = { version = "0.1.0", path = "../../../../lib/rust/text" }
diff --git a/lib/rust/json-rpc/Cargo.toml b/lib/rust/json-rpc/Cargo.toml
index fe8e9b0fb8f..cf3bee07601 100644
--- a/lib/rust/json-rpc/Cargo.toml
+++ b/lib/rust/json-rpc/Cargo.toml
@@ -8,7 +8,7 @@ edition = "2021"
 crate-type = ["cdylib", "rlib"]
 
 [dependencies]
-enso-prelude = { path = "../prelude", features = ["futures"] }
+enso-prelude = { path = "../prelude" }
 enso-shapely = { path = "../shapely" }
 enso-web = { path = "../web" }
 enso-profiler-data = { path = "../profiler/data" }
diff --git a/lib/rust/parser/Cargo.toml b/lib/rust/parser/Cargo.toml
index 1a2c2591b2e..e46d7fd4f43 100644
--- a/lib/rust/parser/Cargo.toml
+++ b/lib/rust/parser/Cargo.toml
@@ -10,7 +10,7 @@ repository = "https://github.com/enso-org/enso"
 license-file = "../../LICENSE"
 
 [dependencies]
-enso-prelude = { path = "../prelude", features = ["serde", "serde_json"] }
+enso-prelude = { path = "../prelude" }
 enso-reflect = { path = "../reflect" }
 enso-data-structures = { path = "../data-structures" }
 enso-types = { path = "../types" }
diff --git a/lib/rust/parser/generate-java/Cargo.toml b/lib/rust/parser/generate-java/Cargo.toml
index 880315d782a..53069e6e717 100644
--- a/lib/rust/parser/generate-java/Cargo.toml
+++ b/lib/rust/parser/generate-java/Cargo.toml
@@ -11,7 +11,7 @@ license-file = "../../LICENSE"
 
 [dependencies]
 enso-metamodel = { path = "../../metamodel", features = ["rust", "java"] }
-enso-prelude = { path = "../../prelude", features = ["serde"] }
+enso-prelude = { path = "../../prelude" }
 enso-parser = { path = ".." }
 enso-reflect = { path = "../../reflect", features = ["graphviz"] }
 derivative = "2.2"
diff --git a/lib/rust/prelude/Cargo.toml b/lib/rust/prelude/Cargo.toml
index ea2f1efd93a..cb63489e424 100644
--- a/lib/rust/prelude/Cargo.toml
+++ b/lib/rust/prelude/Cargo.toml
@@ -28,7 +28,7 @@ derivative = "2.2.0"
 derive_more = "0.99"
 enclose = "1.1.8"
 failure = "0.1.5"
-futures = { version = "0.3.1", optional = true }
+futures = { version = "0.3.1" }
 ifmt = "0.3.3"
 itertools = "0.10.0"
 lazy_static = "1.4"
@@ -36,13 +36,13 @@ num = "0.4.0"
 object = { version = "0.24.0" }
 paste = "1.0"
 shrinkwraprs = "0.3.0"
-serde = { version = "1.0.126", features = ["derive", "rc"], optional = true }
-serde_json = { version = "1.0", optional = true }
+serde = { version = "1.0.126", features = ["derive", "rc"] }
+serde_json = { version = "1.0" }
 smallvec = "1.0.0"
 tracing = { version = "0.1.37", features = ["log"] }
 tracing-subscriber = "0.3"
 tracing-wasm = "0.2"
-wasm-bindgen = { version = "0.2.78", features = ["nightly"], optional = true }
+wasm-bindgen = { version = "0.2.78", features = ["nightly"] }
 weak-table = "0.3.0"
 enso-web = { path = "../web" }
 gen-iter = "0.2.1"
diff --git a/lib/rust/prelude/src/data/non_empty_vec.rs b/lib/rust/prelude/src/data/non_empty_vec.rs
index 712a302177c..6bf2079d41c 100644
--- a/lib/rust/prelude/src/data/non_empty_vec.rs
+++ b/lib/rust/prelude/src/data/non_empty_vec.rs
@@ -18,8 +18,8 @@ use std::vec::Drain;
 #[allow(missing_docs)]
 #[derive(Clone, Debug, Eq, PartialEq, Deref, DerefMut, Reflect)]
 #[reflect(transparent)]
-#[cfg_attr(feature = "serde", derive(crate::serde_reexports::Serialize))]
-#[cfg_attr(feature = "serde", derive(crate::serde_reexports::Deserialize))]
+#[derive(crate::serde_reexports::Serialize)]
+#[derive(crate::serde_reexports::Deserialize)]
 pub struct NonEmptyVec<T, I = usize> {
     #[reflect(as = "Vec<T>")]
     pub elems: VecIndexedBy<T, I>,
diff --git a/lib/rust/prelude/src/data/vec_indexed_by.rs b/lib/rust/prelude/src/data/vec_indexed_by.rs
index 773931c0dfb..a813154b922 100644
--- a/lib/rust/prelude/src/data/vec_indexed_by.rs
+++ b/lib/rust/prelude/src/data/vec_indexed_by.rs
@@ -34,8 +34,8 @@ macro_rules! ranged_fn {
 
 pub trait Index = Copy + From<usize> + Into<usize>;
 
-#[cfg_attr(feature = "serde", derive(crate::serde_reexports::Serialize))]
-#[cfg_attr(feature = "serde", derive(crate::serde_reexports::Deserialize))]
+#[derive(crate::serde_reexports::Serialize)]
+#[derive(crate::serde_reexports::Deserialize)]
 #[derive(Derivative, Deref, DerefMut, From, Into)]
 #[derivative(Clone(bound = "T: Clone, A: Allocator + Clone"))]
 #[derivative(Debug(bound = "T: Debug, A: Allocator"))]
@@ -43,13 +43,10 @@ pub trait Index = Copy + From<usize> + Into<usize>;
 #[derivative(PartialEq(bound = "Vec<T, A>: PartialEq"))]
 #[derivative(Eq(bound = "Vec<T, A>: PartialEq"))]
 pub struct VecIndexedBy<T, I = usize, A: Allocator = std::alloc::Global> {
-    #[cfg_attr(
-        feature = "serde",
-        serde(bound(
-            serialize = "Vec<T, A>: crate::serde_reexports::Serialize",
-            deserialize = "Vec<T, A>: crate::serde_reexports::Deserialize<'de>"
-        ))
-    )]
+    #[serde(bound(
+        serialize = "Vec<T, A>: crate::serde_reexports::Serialize",
+        deserialize = "Vec<T, A>: crate::serde_reexports::Deserialize<'de>"
+    ))]
     #[deref]
     #[deref_mut]
     vec: Vec<T, A>,
diff --git a/lib/rust/prelude/src/lib.rs b/lib/rust/prelude/src/lib.rs
index 82b62623af0..d3dcab1c601 100644
--- a/lib/rust/prelude/src/lib.rs
+++ b/lib/rust/prelude/src/lib.rs
@@ -24,14 +24,12 @@
 #![recursion_limit = "256"]
 
 mod bool;
-#[cfg(feature = "futures")]
 pub mod channel;
 mod collections;
 mod data;
 pub mod debug;
 pub mod env;
 mod fail;
-#[cfg(feature = "futures")]
 pub mod future;
 mod leak;
 mod macros;
@@ -42,7 +40,6 @@ mod range;
 mod rc;
 mod reference;
 mod result;
-#[cfg(feature = "serde")]
 mod serde;
 mod smallvec;
 mod std_reexports;
@@ -54,7 +51,6 @@ mod vec;
 mod wrapper;
 
 pub use crate::bool::*;
-#[cfg(feature = "serde")]
 pub use crate::serde::*;
 pub use crate::smallvec::*;
 pub use anyhow;
@@ -133,7 +129,6 @@ pub mod std_ext {
 ///
 /// They cannot be directly reexported from prelude, as the methods `serialize` and `deserialize`
 /// that would be brought into scope by this, would collide with the other IDE-defined traits.
-#[cfg(feature = "serde")]
 pub mod serde_reexports {
     pub use serde::Deserialize;
     pub use serde::Serialize;
diff --git a/lib/rust/prelude/src/serde.rs b/lib/rust/prelude/src/serde.rs
index 471278746e2..97d22cb7d97 100644
--- a/lib/rust/prelude/src/serde.rs
+++ b/lib/rust/prelude/src/serde.rs
@@ -1,13 +1,11 @@
 //! Module for utilities related to serialization/deserialization using the `serde` library.
 
-#[cfg(feature = "serde_json")]
 use serde::Deserialize;
 
 
 
 /// Try to deserialize value of type `Ret`. In case of any error, it is ignored and the default
 /// value is returned instead.
-#[cfg(feature = "serde_json")]
 pub fn deserialize_or_default<'d, Ret, D>(d: D) -> Result<Ret, D::Error>
 where
     for<'e> Ret: Default + Deserialize<'e>,
@@ -41,7 +39,6 @@ where
 /// check_deserialized_eq(r#"{"blah" : [] }"#, &empty_foo);
 /// check_deserialized_eq(r#"{"blah" : [1,2,3] }"#, &Foo { blah: vec![1, 2, 3] });
 /// ```
-#[cfg(feature = "serde_json")]
 pub fn deserialize_null_as_default<'d, Ret, D>(d: D) -> Result<Ret, D::Error>
 where
     for<'e> Ret: Default + Deserialize<'e>,
diff --git a/lib/rust/prelude/src/string.rs b/lib/rust/prelude/src/string.rs
index e3088e0e8f1..f74ce1646f3 100644
--- a/lib/rust/prelude/src/string.rs
+++ b/lib/rust/prelude/src/string.rs
@@ -7,9 +7,7 @@ use itertools::*;
 
 use crate::impls;
 
-#[cfg(feature = "serde")]
 use serde::Deserialize;
-#[cfg(feature = "serde")]
 use serde::Serialize;
 use std::borrow::Cow;
 use std::ops::Deref;
@@ -102,7 +100,7 @@ impl AsRef<str> for CowString {
 
 /// Immutable string implementation with a fast clone implementation.
 #[derive(Clone, CloneRef, Default, Eq, Hash, PartialEq, Ord, PartialOrd)]
-#[cfg_attr(feature = "serde", derive(Deserialize, Serialize))]
+#[derive(Deserialize, Serialize)]
 pub struct ImString {
     content: Rc<String>,
 }
@@ -286,16 +284,6 @@ impl ToImString for &str {
 // === Macros ===
 
 /// Defines a newtype for `ImString`.
-#[cfg(not(feature = "serde"))]
-#[macro_export]
-macro_rules! im_string_newtype {
-    ($($(#$meta:tt)* $name:ident),* $(,)?) => {
-        im_string_newtype_without_serde!{ $($(#$meta)* $name),* }
-    };
-}
-
-/// Defines a newtype for `ImString`.
-#[cfg(feature = "serde")]
 #[macro_export]
 macro_rules! im_string_newtype {
     ($($(#$meta:tt)* $name:ident),* $(,)?) => {
diff --git a/lib/rust/prelude/src/test.rs b/lib/rust/prelude/src/test.rs
index 6084b907874..45f3b149bd6 100644
--- a/lib/rust/prelude/src/test.rs
+++ b/lib/rust/prelude/src/test.rs
@@ -5,20 +5,15 @@
 // === Export ===
 // ==============
 
-#[cfg(feature = "futures")]
 pub mod future;
-#[cfg(feature = "futures")]
 pub mod stream;
 
 
 
 /// Traits providing helper methods for test code.
 pub mod traits {
-    #[cfg(feature = "futures")]
     pub use super::future::FutureResultTestExt;
-    #[cfg(feature = "futures")]
     pub use super::future::FutureTestExt;
-    #[cfg(feature = "futures")]
     pub use super::stream::StreamTestExt;
     pub use super::ExpectTuple;
 }
diff --git a/lib/rust/types/Cargo.toml b/lib/rust/types/Cargo.toml
index 1c4ea450833..f1a8e938234 100644
--- a/lib/rust/types/Cargo.toml
+++ b/lib/rust/types/Cargo.toml
@@ -11,7 +11,7 @@ enso-reflect = { path = "../reflect" }
 nalgebra = { version = "0.26.1" }
 num-traits = { version = "0.2" }
 paste = "1.0.7"
-serde = { version = "1.0", features = ["derive"], optional = true }
+serde = { version = "1.0", features = ["derive"] }
 enso-prelude = { path = "../prelude" }
 
 [build-dependencies]
diff --git a/lib/rust/types/src/unit2.rs b/lib/rust/types/src/unit2.rs
index 3a4465d4f7f..88b4bbacc78 100644
--- a/lib/rust/types/src/unit2.rs
+++ b/lib/rust/types/src/unit2.rs
@@ -97,7 +97,7 @@ pub trait Variant {
 /// Internal representation of every unit.
 #[repr(transparent)]
 #[derive(Reflect)]
-#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[derive(serde::Serialize, serde::Deserialize)]
 #[reflect(transparent)]
 pub struct UnitData<V, R> {
     repr:    R,
@@ -520,7 +520,7 @@ macro_rules! define {
             pub type $name = $crate::unit2::Unit<[<$name:snake:upper>]>;
             $(#$meta)*
             #[derive(Debug, Clone, Copy, Reflect)]
-            #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+            #[derive(serde::Serialize, serde::Deserialize)]
             pub struct [<$name:snake:upper>];
 
             impl $crate::unit2::Variant for [<$name:snake:upper>] {