diff --git a/libafl/src/events/llmp.rs b/libafl/src/events/llmp.rs
index 9971997f70..93c9f00bb0 100644
--- a/libafl/src/events/llmp.rs
+++ b/libafl/src/events/llmp.rs
@@ -694,7 +694,6 @@ pub fn setup_restarting_mgr_std<I, MT, OT, S>(
 >
 where
     I: Input,
-    S: DeserializeOwned,
     MT: Monitor + Clone,
     OT: ObserversTuple<I, S> + DeserializeOwned,
     S: DeserializeOwned,
diff --git a/libafl/src/feedbacks/map.rs b/libafl/src/feedbacks/map.rs
index ea6450a69a..caa020e8b7 100644
--- a/libafl/src/feedbacks/map.rs
+++ b/libafl/src/feedbacks/map.rs
@@ -275,7 +275,7 @@ impl MapNoveltiesMetadata {
 #[serde(bound = "T: serde::de::DeserializeOwned")]
 pub struct MapFeedbackState<T>
 where
-    T: PrimInt + Default + Copy + 'static + Serialize + serde::de::DeserializeOwned,
+    T: PrimInt + Default + Copy + 'static + Serialize,
 {
     /// Contains information about untouched entries
     pub history_map: Vec<T>,
diff --git a/libafl/src/feedbacks/new_hash_feedback.rs b/libafl/src/feedbacks/new_hash_feedback.rs
index 253b4ab89c..dc4f1da76b 100644
--- a/libafl/src/feedbacks/new_hash_feedback.rs
+++ b/libafl/src/feedbacks/new_hash_feedback.rs
@@ -30,7 +30,7 @@ pub trait HashSetState<T> {
 #[serde(bound = "T: serde::de::DeserializeOwned")]
 pub struct NewHashFeedbackState<T>
 where
-    T: PrimInt + Default + Copy + 'static + Serialize + serde::de::DeserializeOwned + Hash + Debug,
+    T: PrimInt + Default + Copy + 'static + Serialize + Hash + Debug,
 {
     /// Contains information about untouched entries
     pub hash_set: HashSet<T>,
diff --git a/libafl/src/observers/cmp.rs b/libafl/src/observers/cmp.rs
index 354a98e48e..2e32f7b484 100644
--- a/libafl/src/observers/cmp.rs
+++ b/libafl/src/observers/cmp.rs
@@ -195,7 +195,7 @@ where
 #[serde(bound = "CM: serde::de::DeserializeOwned")]
 pub struct StdCmpObserver<'a, CM>
 where
-    CM: CmpMap + Serialize + DeserializeOwned,
+    CM: CmpMap + Serialize,
 {
     cmp_map: OwnedRefMut<'a, CM>,
     size: Option<OwnedRefMut<'a, usize>>,
diff --git a/libafl/src/observers/map.rs b/libafl/src/observers/map.rs
index 94a22de68a..0bea5c82ff 100644
--- a/libafl/src/observers/map.rs
+++ b/libafl/src/observers/map.rs
@@ -186,7 +186,7 @@ where
 #[allow(clippy::unsafe_derive_deserialize)]
 pub struct StdMapObserver<'a, T>
 where
-    T: PrimInt + Default + Copy + 'static + Serialize + serde::de::DeserializeOwned,
+    T: PrimInt + Default + Copy + 'static + Serialize,
 {
     map: OwnedSliceMut<'a, T>,
     initial: T,
@@ -393,7 +393,7 @@ where
 #[allow(clippy::unsafe_derive_deserialize)]
 pub struct ConstMapObserver<'a, T, const N: usize>
 where
-    T: PrimInt + Default + Copy + 'static + Serialize + serde::de::DeserializeOwned,
+    T: PrimInt + Default + Copy + 'static + Serialize,
 {
     map: OwnedSliceMut<'a, T>,
     initial: T,
@@ -587,7 +587,7 @@ where
 #[allow(clippy::unsafe_derive_deserialize)]
 pub struct VariableMapObserver<'a, T>
 where
-    T: PrimInt + Default + Copy + 'static + Serialize + serde::de::DeserializeOwned,
+    T: PrimInt + Default + Copy + 'static + Serialize,
 {
     map: OwnedSliceMut<'a, T>,
     size: OwnedRefMut<'a, usize>,
@@ -773,7 +773,7 @@ where
 #[serde(bound = "M: serde::de::DeserializeOwned")]
 pub struct HitcountsMapObserver<M>
 where
-    M: Serialize + serde::de::DeserializeOwned,
+    M: Serialize,
 {
     base: M,
 }
@@ -957,7 +957,7 @@ where
 #[allow(clippy::unsafe_derive_deserialize)]
 pub struct MultiMapObserver<'a, T>
 where
-    T: PrimInt + Default + Copy + 'static + Serialize + serde::de::DeserializeOwned + Debug,
+    T: PrimInt + Default + Copy + 'static + Serialize + Debug,
 {
     maps: Vec<OwnedSliceMut<'a, T>>,
     intervals: IntervalTree<usize, usize>,
@@ -1187,7 +1187,7 @@ where
 #[allow(clippy::unsafe_derive_deserialize)]
 pub struct OwnedMapObserver<T>
 where
-    T: PrimInt + Default + Copy + 'static + Serialize + serde::de::DeserializeOwned,
+    T: PrimInt + Default + Copy + 'static + Serialize,
 {
     map: Vec<T>,
     initial: T,
diff --git a/libafl/src/observers/mod.rs b/libafl/src/observers/mod.rs
index c6ec5e23e2..5c3fc1ef94 100644
--- a/libafl/src/observers/mod.rs
+++ b/libafl/src/observers/mod.rs
@@ -238,7 +238,7 @@ impl Named for TimeObserver {
 #[serde(bound = "T: serde::de::DeserializeOwned")]
 pub struct ListObserver<'a, T>
 where
-    T: Debug + Serialize + serde::de::DeserializeOwned,
+    T: Debug + Serialize,
 {
     name: String,
     /// The list