diff --git a/src/rngs/adapter/read.rs b/src/rngs/adapter/read.rs
index c623e4e13be..63b0dd0c0f0 100644
--- a/src/rngs/adapter/read.rs
+++ b/src/rngs/adapter/read.rs
@@ -44,7 +44,6 @@ use rand_core::{impls, Error, RngCore};
 /// [`OsRng`]: crate::rngs::OsRng
 /// [`try_fill_bytes`]: RngCore::try_fill_bytes
 #[derive(Debug)]
-#[cfg_attr(feature = "serde1", derive(serde::Serialize, serde::Deserialize))]
 pub struct ReadRng<R> {
     reader: R,
 }
diff --git a/src/rngs/adapter/reseeding.rs b/src/rngs/adapter/reseeding.rs
index 36b492a57f3..70b0b82307f 100644
--- a/src/rngs/adapter/reseeding.rs
+++ b/src/rngs/adapter/reseeding.rs
@@ -14,8 +14,6 @@ use core::mem::size_of;
 
 use rand_core::block::{BlockRng, BlockRngCore};
 use rand_core::{CryptoRng, Error, RngCore, SeedableRng};
-#[cfg(feature = "serde1")]
-use serde::{Deserialize, Serialize};
 
 /// A wrapper around any PRNG that implements [`BlockRngCore`], that adds the
 /// ability to reseed it.
@@ -78,13 +76,6 @@ use serde::{Deserialize, Serialize};
 /// [`ReseedingRng::new`]: ReseedingRng::new
 /// [`reseed()`]: ReseedingRng::reseed
 #[derive(Debug)]
-#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]
-#[cfg_attr(
-    feature = "serde1",
-    serde(
-        bound = "for<'x> R: Serialize + Deserialize<'x> + Sized, for<'x> R::Results: Serialize + Deserialize<'x>, for<'x> Rsdr: Serialize + Deserialize<'x>"
-    )
-)]
 pub struct ReseedingRng<R, Rsdr>(BlockRng<ReseedingCore<R, Rsdr>>)
 where
     R: BlockRngCore + SeedableRng,
@@ -157,7 +148,6 @@ where
 }
 
 #[derive(Debug)]
-#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]
 struct ReseedingCore<R, Rsdr> {
     inner: R,
     reseeder: Rsdr,