diff --git a/nalgebra-sparse/src/coo.rs b/nalgebra-sparse/src/coo.rs
index 35a14083..b84b2cc5 100644
--- a/nalgebra-sparse/src/coo.rs
+++ b/nalgebra-sparse/src/coo.rs
@@ -320,7 +320,7 @@ struct CooMatrixDeserializationData<T> {
 #[cfg(feature = "serde-serialize")]
 impl<'de, T> Deserialize<'de> for CooMatrix<T>
 where
-    T: for<'de2> Deserialize<'de2>,
+    T: Deserialize<'de>,
 {
     fn deserialize<D>(deserializer: D) -> Result<CooMatrix<T>, D::Error>
     where
diff --git a/nalgebra-sparse/src/csc.rs b/nalgebra-sparse/src/csc.rs
index 512be540..fccc6146 100644
--- a/nalgebra-sparse/src/csc.rs
+++ b/nalgebra-sparse/src/csc.rs
@@ -565,7 +565,7 @@ struct CscMatrixDeserializationData<T> {
 #[cfg(feature = "serde-serialize")]
 impl<'de, T> Deserialize<'de> for CscMatrix<T>
 where
-    T: for<'de2> Deserialize<'de2>,
+    T: Deserialize<'de>,
 {
     fn deserialize<D>(deserializer: D) -> Result<CscMatrix<T>, D::Error>
     where
diff --git a/nalgebra-sparse/src/csr.rs b/nalgebra-sparse/src/csr.rs
index 9e31c90c..31375340 100644
--- a/nalgebra-sparse/src/csr.rs
+++ b/nalgebra-sparse/src/csr.rs
@@ -636,7 +636,7 @@ struct CsrMatrixDeserializationData<T> {
 #[cfg(feature = "serde-serialize")]
 impl<'de, T> Deserialize<'de> for CsrMatrix<T>
 where
-    T: for<'de2> Deserialize<'de2>,
+    T: Deserialize<'de>,
 {
     fn deserialize<D>(deserializer: D) -> Result<CsrMatrix<T>, D::Error>
     where