diff --git a/Cargo.toml b/Cargo.toml
index 52bb82f006..278b946928 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,7 +13,7 @@ exclude = [ "/res/*", "/tests/*", "/fuzz/*", "/benches/*" ]
 
 [dependencies]
 validation = { package = "wasmi-validation", version = "0.3", path = "validation", default-features = false }
-parity-wasm = { version = "0.41.0", default-features = false }
+parity-wasm = { version = "0.42.0", default-features = false }
 memory_units = "0.3.0"
 libm = { version = "0.2.1", optional = true }
 num-rational = { version = "0.2.2", default-features = false }
diff --git a/src/prepare/mod.rs b/src/prepare/mod.rs
index eb85a0f8e5..c6d4b54b8b 100644
--- a/src/prepare/mod.rs
+++ b/src/prepare/mod.rs
@@ -154,7 +154,7 @@ pub fn deny_floating_point(module: &Module) -> Result<(), Error> {
                         if func
                             .params()
                             .iter()
-                            .chain(func.return_type().as_ref())
+                            .chain(func.results())
                             .any(|&typ| typ == ValueType::F32 || typ == ValueType::F64)
                         {
                             return Err(Error("Use of floating point types denied".to_string()));
diff --git a/src/types.rs b/src/types.rs
index 12a8d5986b..2e26bcde07 100644
--- a/src/types.rs
+++ b/src/types.rs
@@ -65,7 +65,10 @@ impl Signature {
                 .cloned()
                 .map(ValueType::from_elements)
                 .collect(),
-            return_type: func_type.return_type().map(ValueType::from_elements),
+            return_type: func_type
+                .results()
+                .first()
+                .map(|vty| ValueType::from_elements(*vty)),
         }
     }
 }
diff --git a/validation/Cargo.toml b/validation/Cargo.toml
index 5ae3bb5ea7..fe2ade546e 100644
--- a/validation/Cargo.toml
+++ b/validation/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmi-validation"
-version = "0.3.0"
+version = "0.3.1"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"
 license = "MIT/Apache-2.0"
@@ -8,7 +8,7 @@ repository = "https://github.com/paritytech/wasmi"
 description = "Wasm code validator"
 
 [dependencies]
-parity-wasm = { version = "0.41.0", default-features = false }
+parity-wasm = { version = "0.42.0", default-features = false }
 
 [dev-dependencies]
 assert_matches = "1.1"
diff --git a/validation/src/context.rs b/validation/src/context.rs
index 619e5c7945..792bb3bbb4 100644
--- a/validation/src/context.rs
+++ b/validation/src/context.rs
@@ -63,8 +63,9 @@ impl ModuleContext {
 
         let params = ty.params();
         let return_ty = ty
-            .return_type()
-            .map(BlockType::Value)
+            .results()
+            .first()
+            .map(|vty| BlockType::Value(*vty))
             .unwrap_or(BlockType::NoResult);
         Ok((params, return_ty))
     }
diff --git a/validation/src/tests.rs b/validation/src/tests.rs
index 480225d926..526d8873e7 100644
--- a/validation/src/tests.rs
+++ b/validation/src/tests.rs
@@ -201,7 +201,7 @@ fn funcs() {
     let m = module()
         .function()
         .signature()
-        .return_type()
+        .result()
         .i32()
         .build()
         .body()
@@ -213,7 +213,7 @@ fn funcs() {
         .build()
         .function()
         .signature()
-        .return_type()
+        .result()
         .i32()
         .build()
         .body()