diff --git a/schemars/Cargo.toml b/schemars/Cargo.toml
index fb6b06e5..126c205a 100644
--- a/schemars/Cargo.toml
+++ b/schemars/Cargo.toml
@@ -34,6 +34,7 @@ rust_decimal = { version = "1", default-features = false, optional = true }
 bigdecimal03 = { version = "0.3", default-features = false, optional = true, package = "bigdecimal" }
 bigdecimal04 = { version = "0.4", default-features = false, optional = true, package = "bigdecimal" }
 enumset = { version = "1.0", optional = true }
+im = { version = "15.1.0", optional = true }
 smol_str = { version = "0.1.17", optional = true }
 semver = { version = "1.0.9", features = ["serde"], optional = true }
 
diff --git a/schemars/src/json_schema_impls/im.rs b/schemars/src/json_schema_impls/im.rs
new file mode 100644
index 00000000..3eb31efe
--- /dev/null
+++ b/schemars/src/json_schema_impls/im.rs
@@ -0,0 +1,10 @@
+use crate::gen::SchemaGenerator;
+use crate::schema::*;
+use crate::JsonSchema;
+use im;
+
+forward_impl!((<T: JsonSchema> JsonSchema for im::HashSet<T>) => std::collections::HashSet<T>);
+forward_impl!((<K, V: JsonSchema> JsonSchema for im::HashMap<K, V>) => std::collections::HashMap<K, V>);
+forward_impl!((<T: JsonSchema> JsonSchema for im::OrdSet<T>) => std::collections::HashSet<T>);
+forward_impl!((<K, V: JsonSchema> JsonSchema for im::OrdMap<K, V>) => std::collections::HashMap<K, V>);
+forward_impl!((<T: JsonSchema> JsonSchema for im::Vector<T>) => std::vec::Vec<T>);
diff --git a/schemars/src/json_schema_impls/mod.rs b/schemars/src/json_schema_impls/mod.rs
index 0c548eb3..b7a81c48 100644
--- a/schemars/src/json_schema_impls/mod.rs
+++ b/schemars/src/json_schema_impls/mod.rs
@@ -62,6 +62,8 @@ mod either;
 #[cfg(feature = "enumset")]
 mod enumset;
 mod ffi;
+#[cfg(feature = "im")]
+mod im;
 #[cfg(feature = "indexmap")]
 mod indexmap;
 #[cfg(feature = "indexmap2")]