diff --git a/.travis.yml b/.travis.yml
index fc7ee89f809..dda47d4541b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,8 +15,8 @@ before_cache:
   - ./ci/clear_cache.sh
 
 rust:
-  - 1.35.0 # min supported
-  - stable
+  - 1.39.0 # min supported
+  # - stable (enable when 1.40.0 is released)
   - beta
   - nightly
 
@@ -30,9 +30,10 @@ install:
   - rustup component add rustfmt
   - rustup component add clippy
   - rustup target add wasm32-unknown-unknown
-  - cargo install cargo-update || true
-  - cargo install-update-config --version =0.2.50 wasm-bindgen-cli
-  - cargo install-update wasm-bindgen-cli
+  # - cargo install cargo-update || true
+  - cargo install -f wasm-bindgen-cli --version 0.2.54
+  # - cargo install-update-config --version =0.2.54 wasm-bindgen-cli
+  # - cargo install-update wasm-bindgen-cli
   - LATEST_CHROMEDRIVER_VERSION=`curl -s "https://chromedriver.storage.googleapis.com/LATEST_RELEASE"`
   - curl --retry 5 -LO "https://chromedriver.storage.googleapis.com/${LATEST_CHROMEDRIVER_VERSION}/chromedriver_linux64.zip"
   - unzip chromedriver_linux64.zip
diff --git a/Cargo.toml b/Cargo.toml
index 7e77a703f1a..4532efc2963 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -38,7 +38,7 @@ toml = { version = "0.4", optional = true }
 yew-macro = { version = "0.10.0", path = "crates/macro" }
 
 [target.'cfg(all(target_arch = "wasm32", not(cargo_web)))'.dependencies]
-wasm-bindgen = "=0.2.50"
+wasm-bindgen = "0.2.54"
 
 [target.'cfg(target_os = "emscripten")'.dependencies]
 ryu = "=1.0.0" # 1.0.1 breaks emscripten
@@ -49,7 +49,7 @@ trybuild = "1.0"
 rustversion = "0.1"
 
 [target.'cfg(all(target_arch = "wasm32", not(cargo_web)))'.dev-dependencies]
-wasm-bindgen-test = "=0.2.50"
+wasm-bindgen-test = "0.3.4"
 
 [features]
 default = []
diff --git a/README.md b/README.md
index e0702532ee5..9a448d417f2 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@
   <p>
     <a href="https://travis-ci.com/yewstack/yew"><img alt="Build Status" src="https://travis-ci.com/yewstack/yew.svg?branch=master"/></a>
     <a href="https://gitter.im/yewframework/Lobby"><img alt="Gitter Chat" src="https://badges.gitter.im/yewframework.svg"/></a>
-    <a href="https://blog.rust-lang.org/2019/05/23/Rust-1.35.0.html"><img alt="Rustc Version 1.35+" src="https://img.shields.io/badge/rustc-1.35+-lightgray.svg"/></a>
+    <a href="https://blog.rust-lang.org/2019/11/07/Rust-1.39.0.html"><img alt="Rustc Version 1.39+" src="https://img.shields.io/badge/rustc-1.39+-lightgray.svg"/></a>
   </p>
 
   <h4>
diff --git a/examples/js_callback/Cargo.toml b/examples/js_callback/Cargo.toml
index af661676f9d..48dc3fc131e 100644
--- a/examples/js_callback/Cargo.toml
+++ b/examples/js_callback/Cargo.toml
@@ -9,4 +9,4 @@ yew = { path = "../.." }
 stdweb = "^0.4.20"
 
 [target.'cfg(all(target_arch = "wasm32", not(cargo_web)))'.dependencies]
-wasm-bindgen = "=0.2.50"
+wasm-bindgen = "0.2.54"
diff --git a/tests/derive_props/fail.stderr b/tests/derive_props/fail.stderr
index 9f626a97d5b..79514b472c5 100644
--- a/tests/derive_props/fail.stderr
+++ b/tests/derive_props/fail.stderr
@@ -19,7 +19,7 @@ error[E0599]: no method named `build` found for type `t3::PropsBuilder<t3::Props
    |                       - method `build` not found for this
 ...
 34 |         Props::builder().build();
-   |                          ^^^^^
+   |                          ^^^^^ method not found in `t3::PropsBuilder<t3::PropsBuilderStep_missing_required_prop_value>`
 
 error[E0599]: no method named `b` found for type `t4::PropsBuilder<t4::PropsBuilderStep_missing_required_prop_a>` in the current scope
   --> $DIR/fail.rs:48:26
@@ -28,7 +28,8 @@ error[E0599]: no method named `b` found for type `t4::PropsBuilder<t4::PropsBuil
    |                       - method `b` not found for this
 ...
 48 |         Props::builder().b(1).a(2).build();
-   |                          ^ help: did you mean: `a`
+   |                          ^ help: there is a method with a similar name: `a`
 
-Some errors occurred: E0277, E0599.
+Some errors have detailed explanations: E0277, E0599.
 For more information about an error, try `rustc --explain E0277`.
+error: could not compile `yew-tests`.
diff --git a/tests/derive_props_test.rs b/tests/derive_props_test.rs
index 2b287b6bd0f..4cd9ac6ef32 100644
--- a/tests/derive_props_test.rs
+++ b/tests/derive_props_test.rs
@@ -1,5 +1,5 @@
 #[allow(dead_code)]
-#[rustversion::attr(stable(1.35.0), cfg_attr(not(feature = "web_test"), test))]
+#[rustversion::attr(beta, cfg_attr(not(feature = "web_test"), test))]
 fn tests() {
     let t = trybuild::TestCases::new();
     t.pass("tests/derive_props/pass.rs");
diff --git a/tests/macro/helpers.rs b/tests/macro/helpers.rs
index 9e7e3c5418c..feb038b9910 100644
--- a/tests/macro/helpers.rs
+++ b/tests/macro/helpers.rs
@@ -6,7 +6,7 @@ macro_rules! pass_helper {
         pass_helper! { @ html $($tail)* }
     };
     ( @html $head:stmt; $($tail:tt)* ) => {
-        $head;
+        $head
         pass_helper! { @ html $($tail)* }
     };
     ( $($content:tt)* ) => {
diff --git a/tests/macro/html-block-fail.stderr b/tests/macro/html-block-fail.stderr
index f13d27d9b55..69da891a831 100644
--- a/tests/macro/html-block-fail.stderr
+++ b/tests/macro/html-block-fail.stderr
@@ -35,3 +35,4 @@ error[E0277]: `()` doesn't implement `std::fmt::Display`
    = note: required because of the requirements on the impl of `std::convert::Into<yew::virtual_dom::vnode::VNode<_>>` for `()`
 
 For more information about this error, try `rustc --explain E0277`.
+error: could not compile `yew-tests`.
diff --git a/tests/macro/html-component-fail-unimplemented.stderr b/tests/macro/html-component-fail-unimplemented.stderr
index 185eda68a78..ecef60be81e 100644
--- a/tests/macro/html-component-fail-unimplemented.stderr
+++ b/tests/macro/html-component-fail-unimplemented.stderr
@@ -5,3 +5,4 @@ error[E0277]: the trait bound `std::string::String: yew::html::Component` is not
   |              ^^^^^^ the trait `yew::html::Component` is not implemented for `std::string::String`
 
 For more information about this error, try `rustc --explain E0277`.
+error: could not compile `yew-tests`.
diff --git a/tests/macro/html-component-fail.stderr b/tests/macro/html-component-fail.stderr
index ee45f02e0c6..e9bd6e74fa2 100644
--- a/tests/macro/html-component-fail.stderr
+++ b/tests/macro/html-component-fail.stderr
@@ -78,7 +78,7 @@ error: expected type, found `/`
   --> $DIR/html-component-fail.rs:74:14
    |
 74 |     html! { </Child> };
-   |              ^
+   |              ^ expected type
 
 error: this open tag has no corresponding close tag
   --> $DIR/html-component-fail.rs:75:13
@@ -113,7 +113,7 @@ error[E0599]: no method named `unknown` found for type `ChildPropertiesBuilder<C
    |                   - method `unknown` not found for this
 ...
 65 |     html! { <Child unknown="unknown" /> };
-   |                    ^^^^^^^
+   |                    ^^^^^^^ method not found in `ChildPropertiesBuilder<ChildPropertiesBuilderStep_missing_required_prop_int>`
 
 error[E0308]: mismatched types
   --> $DIR/html-component-fail.rs:67:33
@@ -162,6 +162,10 @@ error[E0308]: mismatched types
    |
 72 |     html! { <Child int=0u32 /> };
    |                        ^^^^ expected i32, found u32
+help: you can convert an `u32` to `i32` and panic if the converted value wouldn't fit
+   |
+72 |     html! { <Child int=0u32.try_into().unwrap() /> };
+   |                        ^^^^^^^^^^^^^^^^^^^^^^^^
 
 error[E0599]: no method named `string` found for type `ChildPropertiesBuilder<ChildPropertiesBuilderStep_missing_required_prop_int>` in the current scope
   --> $DIR/html-component-fail.rs:73:20
@@ -170,7 +174,7 @@ error[E0599]: no method named `string` found for type `ChildPropertiesBuilder<Ch
    |                   - method `string` not found for this
 ...
 73 |     html! { <Child string="abc" /> };
-   |                    ^^^^^^
+   |                    ^^^^^^ method not found in `ChildPropertiesBuilder<ChildPropertiesBuilderStep_missing_required_prop_int>`
 
 error[E0599]: no method named `children` found for type `ChildPropertiesBuilder<ChildPropertiesBuilderStep_missing_required_prop_int>` in the current scope
   --> $DIR/html-component-fail.rs:77:5
@@ -179,7 +183,7 @@ error[E0599]: no method named `children` found for type `ChildPropertiesBuilder<
    |                   - method `children` not found for this
 ...
 77 |     html! { <Child>{ "Not allowed" }</Child> };
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method not found in `ChildPropertiesBuilder<ChildPropertiesBuilderStep_missing_required_prop_int>`
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
@@ -227,5 +231,3 @@ error[E0277]: the trait bound `yew::virtual_dom::vcomp::VChild<Child, ChildConta
    |
    = note: required because of the requirements on the impl of `std::convert::Into<yew::virtual_dom::vcomp::VChild<Child, ChildContainer>>` for `yew::virtual_dom::vnode::VNode<_>`
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
-
-Some errors occurred: E0277, E0308, E0425, E0599, E0609.
diff --git a/tests/macro/html-iterable-fail.stderr b/tests/macro/html-iterable-fail.stderr
index e14d785dbf7..4536879cd4f 100644
--- a/tests/macro/html-iterable-fail.stderr
+++ b/tests/macro/html-iterable-fail.stderr
@@ -60,3 +60,4 @@ error[E0277]: `()` doesn't implement `std::fmt::Display`
    = note: required because of the requirements on the impl of `std::convert::Into<yew::virtual_dom::vnode::VNode<_>>` for `&()`
 
 For more information about this error, try `rustc --explain E0277`.
+error: could not compile `yew-tests`.
diff --git a/tests/macro/html-list-fail.stderr b/tests/macro/html-list-fail.stderr
index a618571662d..179b3e02228 100644
--- a/tests/macro/html-list-fail.stderr
+++ b/tests/macro/html-list-fail.stderr
@@ -39,3 +39,5 @@ error: expected valid html element
    |
 10 |     html! { <>invalid</> };
    |               ^^^^^^^
+
+error: could not compile `yew-tests`.
diff --git a/tests/macro/html-node-fail.stderr b/tests/macro/html-node-fail.stderr
index 6cc3a67c90a..c36f67cf647 100644
--- a/tests/macro/html-node-fail.stderr
+++ b/tests/macro/html-node-fail.stderr
@@ -22,7 +22,7 @@ error: unsupported type
 11 |     html! {  b"str" };
    |              ^^^^^^
 
-error: int literal is too large
+error: integer literal is too large
   --> $DIR/html-node-fail.rs:12:14
    |
 12 |     html! {  1111111111111111111111111111111111111111111111111111111111111111111111111111 };
@@ -40,7 +40,7 @@ error: unsupported type
 14 |     html! {  <span>{ b"str" }</span> };
    |                      ^^^^^^
 
-error: int literal is too large
+error: integer literal is too large
   --> $DIR/html-node-fail.rs:15:22
    |
 15 |     html! {  <span>{ 1111111111111111111111111111111111111111111111111111111111111111111111111111 }</span> };
@@ -76,5 +76,6 @@ error[E0277]: `()` doesn't implement `std::fmt::Display`
    = note: required because of the requirements on the impl of `std::convert::From<()>` for `yew::virtual_dom::vnode::VNode<_>`
    = note: required by `std::convert::From::from`
 
-Some errors occurred: E0277, E0425.
+Some errors have detailed explanations: E0277, E0425.
 For more information about an error, try `rustc --explain E0277`.
+error: could not compile `yew-tests`.
diff --git a/tests/macro/html-tag-fail.stderr b/tests/macro/html-tag-fail.stderr
index 611180495ea..7ff76430ad4 100644
--- a/tests/macro/html-tag-fail.stderr
+++ b/tests/macro/html-tag-fail.stderr
@@ -197,7 +197,7 @@ error[E0599]: no method named `to_string` found for type `NotToString` in the cu
    | ------------------- method `to_string` not found for this
 ...
 37 |     html! { <input string=NotToString /> };
-   |                           ^^^^^^^^^^^
+   |                           ^^^^^^^^^^^ method not found in `NotToString`
    |
    = note: the method `to_string` exists but the following trait bounds were not satisfied:
            `NotToString : std::string::ToString`
@@ -213,5 +213,3 @@ error[E0308]: mismatched types
    |
    = note: expected type `yew::html::NodeRef`
               found type `()`
-
-Some errors occurred: E0277, E0308, E0599.
diff --git a/tests/macro_test.rs b/tests/macro_test.rs
index 9c8f08405bd..f5dafaf80ad 100644
--- a/tests/macro_test.rs
+++ b/tests/macro_test.rs
@@ -1,5 +1,5 @@
 #[allow(dead_code)]
-#[rustversion::attr(stable(1.35.0), cfg_attr(not(feature = "web_test"), test))]
+#[rustversion::attr(stable(1.39.0), cfg_attr(not(feature = "web_test"), test))]
 fn tests() {
     let t = trybuild::TestCases::new();