diff --git a/core/src/usage/lifetimes.rs b/core/src/usage/lifetimes.rs
index 5f527a9..80aee6f 100644
--- a/core/src/usage/lifetimes.rs
+++ b/core/src/usage/lifetimes.rs
@@ -107,6 +107,9 @@ uses_lifetimes!(syn::LifetimeDef, lifetime, bounds);
 uses_lifetimes!(syn::ParenthesizedGenericArguments, inputs, output);
 uses_lifetimes!(syn::Path, segments);
 uses_lifetimes!(syn::PathSegment, arguments);
+uses_lifetimes!(syn::PredicateEq, lhs_ty, rhs_ty);
+uses_lifetimes!(syn::PredicateLifetime, lifetime, bounds);
+uses_lifetimes!(syn::PredicateType, lifetimes, bounded_ty, bounds);
 uses_lifetimes!(syn::QSelf, ty);
 uses_lifetimes!(syn::TraitBound, path, lifetimes);
 uses_lifetimes!(syn::TypeArray, elem);
@@ -214,6 +217,20 @@ impl UsesLifetimes for syn::PathArguments {
     }
 }
 
+impl UsesLifetimes for syn::WherePredicate {
+    fn uses_lifetimes<'a>(
+        &self,
+        options: &Options,
+        lifetimes: &'a LifetimeSet,
+    ) -> LifetimeRefSet<'a> {
+        match *self {
+            syn::WherePredicate::Type(ref v) => v.uses_lifetimes(options, lifetimes),
+            syn::WherePredicate::Lifetime(ref v) => v.uses_lifetimes(options, lifetimes),
+            syn::WherePredicate::Eq(ref v) => v.uses_lifetimes(options, lifetimes),
+        }
+    }
+}
+
 impl UsesLifetimes for syn::GenericArgument {
     fn uses_lifetimes<'a>(
         &self,
diff --git a/core/src/usage/type_params.rs b/core/src/usage/type_params.rs
index d804f4a..9b46286 100644
--- a/core/src/usage/type_params.rs
+++ b/core/src/usage/type_params.rs
@@ -77,6 +77,8 @@ uses_type_params!(syn::DataUnion, fields);
 uses_type_params!(syn::Field, ty);
 uses_type_params!(syn::FieldsNamed, named);
 uses_type_params!(syn::ParenthesizedGenericArguments, inputs, output);
+uses_type_params!(syn::PredicateEq, lhs_ty, rhs_ty);
+uses_type_params!(syn::PredicateType, bounded_ty, bounds);
 uses_type_params!(syn::QSelf, ty);
 uses_type_params!(syn::TraitBound, path);
 uses_type_params!(syn::TypeArray, elem);
@@ -190,6 +192,16 @@ impl UsesTypeParams for syn::PathArguments {
     }
 }
 
+impl UsesTypeParams for syn::WherePredicate {
+    fn uses_type_params<'a>(&self, options: &Options, type_set: &'a IdentSet) -> IdentRefSet<'a> {
+        match *self {
+            syn::WherePredicate::Lifetime(_) => Default::default(),
+            syn::WherePredicate::Type(ref v) => v.uses_type_params(options, type_set),
+            syn::WherePredicate::Eq(ref v) => v.uses_type_params(options, type_set),
+        }
+    }
+}
+
 impl UsesTypeParams for syn::GenericArgument {
     fn uses_type_params<'a>(&self, options: &Options, type_set: &'a IdentSet) -> IdentRefSet<'a> {
         match *self {