diff --git a/schemars/Cargo.toml b/schemars/Cargo.toml
index bd45a8a..84f2b6b 100644
--- a/schemars/Cargo.toml
+++ b/schemars/Cargo.toml
@@ -2,14 +2,14 @@
 name = "schemars"
 description = "Generate JSON Schemas from Rust code"
 repository = "https://github.com/GREsau/schemars"
-version = "0.1.5"
+version = "0.1.6"
 authors = ["Graham Esau <gesau@hotmail.co.uk>"]
 edition = "2018"
 license = "MIT"
 keywords = ["rust", "json-schema", "serde"]
 
 [dependencies]
-schemars_derive = { version = "0.1.5", path = "../schemars_derive" }
+schemars_derive = { version = "0.1.6", path = "../schemars_derive" }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 
diff --git a/schemars/src/json_schema_impls.rs b/schemars/src/json_schema_impls.rs
index ed57681..89dbad1 100644
--- a/schemars/src/json_schema_impls.rs
+++ b/schemars/src/json_schema_impls.rs
@@ -295,7 +295,7 @@ impl<T: JsonSchema> JsonSchema for Option<T> {
     }
 }
 
-impl<T> JsonSchema for std::marker::PhantomData<T> {
+impl<T: ?Sized> JsonSchema for std::marker::PhantomData<T> {
     no_ref_schema!();
 
     fn schema_name() -> String {
@@ -313,7 +313,7 @@ macro_rules! deref_impl {
     ($($desc:tt)+) => {
         impl $($desc)+
         where
-            T: JsonSchema,
+            T: ?Sized + JsonSchema,
         {
             fn is_referenceable() -> bool {
                 T::is_referenceable()
diff --git a/schemars/tests/flatten.rs b/schemars/tests/flatten.rs
index a3d06e7..10a80d3 100644
--- a/schemars/tests/flatten.rs
+++ b/schemars/tests/flatten.rs
@@ -29,7 +29,7 @@ struct Deep2 {
 
 #[derive(Debug, JsonSchema)]
 struct Deep3 {
-    baz: String,
+    baz: &'static str,
 }
 
 #[test]
diff --git a/schemars_derive/Cargo.toml b/schemars_derive/Cargo.toml
index 862c3f6..aae2284 100644
--- a/schemars_derive/Cargo.toml
+++ b/schemars_derive/Cargo.toml
@@ -2,7 +2,7 @@
 name = "schemars_derive"
 description = "Macros for #[derive(JsonSchema)], for use with schemars"
 repository = "https://github.com/GREsau/schemars"
-version = "0.1.5"
+version = "0.1.6"
 authors = ["Graham Esau <gesau@hotmail.co.uk>"]
 edition = "2018"
 license = "MIT"