diff --git a/CHANGELOG.md b/CHANGELOG.md
index f5517e6..8094394 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## next
+### Changed
+- Remove trait bounds from Map/Set JsonSchema impls. They are unnecessary as we never create/use any instances of these types.
+
 ## [0.6.3] - 2019-12-27
 - No actual code changes - this version was just published to fix broken README on crates.io
 
diff --git a/schemars/src/json_schema_impls/maps.rs b/schemars/src/json_schema_impls/maps.rs
index 0fc3214..c109b00 100644
--- a/schemars/src/json_schema_impls/maps.rs
+++ b/schemars/src/json_schema_impls/maps.rs
@@ -39,8 +39,8 @@ macro_rules! map_impl {
     };
 }
 
-map_impl!(<K: Ord, V> JsonSchema for std::collections::BTreeMap<K, V>);
-map_impl!(<K: Eq + core::hash::Hash, V, H: core::hash::BuildHasher> JsonSchema for std::collections::HashMap<K, V, H>);
+map_impl!(<K, V> JsonSchema for std::collections::BTreeMap<K, V>);
+map_impl!(<K, V, H> JsonSchema for std::collections::HashMap<K, V, H>);
 
 #[cfg(test)]
 mod tests {
diff --git a/schemars/src/json_schema_impls/sequences.rs b/schemars/src/json_schema_impls/sequences.rs
index ab146fe..1e79210 100644
--- a/schemars/src/json_schema_impls/sequences.rs
+++ b/schemars/src/json_schema_impls/sequences.rs
@@ -29,9 +29,9 @@ macro_rules! seq_impl {
     };
 }
 
-seq_impl!(<T: Ord> JsonSchema for std::collections::BinaryHeap<T>);
-seq_impl!(<T: Ord> JsonSchema for std::collections::BTreeSet<T>);
-seq_impl!(<T: Eq + core::hash::Hash, H: core::hash::BuildHasher> JsonSchema for std::collections::HashSet<T, H>);
+seq_impl!(<T> JsonSchema for std::collections::BinaryHeap<T>);
+seq_impl!(<T> JsonSchema for std::collections::BTreeSet<T>);
+seq_impl!(<T, H> JsonSchema for std::collections::HashSet<T, H>);
 seq_impl!(<T> JsonSchema for std::collections::LinkedList<T>);
 seq_impl!(<T> JsonSchema for Vec<T>);
 seq_impl!(<T> JsonSchema for std::collections::VecDeque<T>);