diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 66fd3cd..93e47c6 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -10,10 +10,11 @@ jobs:
       group: ${{ github.workflow }}-${{ github.ref }}
     steps:
       - uses: actions/checkout@v2
-      - name: Install mdBook
-        uses: peaceiris/actions-mdbook@v1
-        with:
-          mdbook-version: 'latest'
+      - uses: hecrj/setup-rust-action@v2
+      - name: Install `mdbook`, `mdbook-iced`, and `wasm-bindgen-cli`
+        run: cargo install mdbook mdbook-iced wasm-bindgen-cli
+      - name: Add `wasm32-unknown-unknown` target to Rust toolchain
+        run: rustup target add wasm32-unknown-unknown
       - name: Build book
         run: mdbook build
       - name: Copy CNAME
diff --git a/.gitignore b/.gitignore
index 7585238..02b1974 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
 book
+target
+.icebergs
diff --git a/book.toml b/book.toml
index 6b7bc2c..80b2f57 100644
--- a/book.toml
+++ b/book.toml
@@ -12,3 +12,6 @@ edit-url-template = "https://github.com/iced-rs/book/edit/master/{path}"
 
 [output.html.playground]
 runnable = false
+
+[preprocessor.iced]
+rev = "9db6ac8f202ebdc1453edee01da0b30aee0949d8"
diff --git a/src/the-runtime.md b/src/the-runtime.md
index 1d39e88..236d61a 100644
--- a/src/the-runtime.md
+++ b/src/the-runtime.md
@@ -214,7 +214,7 @@ its own magic[^magic]—so you don't need to worry about learning the dark arts
 
 If we want to run our `Counter`, all we have to do is call [`run`]:
 
-```rust,ignore
+```rust,ignore,iced(height=100px)
 # use iced::widget::{button, column, text, Column};
 # 
 pub fn main() -> iced::Result {