diff --git a/.github/workflows/release-plz.yml b/.github/workflows/release-plz.yml
index 552f9b63..faa43281 100644
--- a/.github/workflows/release-plz.yml
+++ b/.github/workflows/release-plz.yml
@@ -10,19 +10,10 @@ on:
       - main
 
 jobs:
-  wasmstan:
-    name: Prophet WASMStan component
-    uses: grafana/augurs/.github/workflows/wasmstan.yml@main
-
   release-plz:
     name: Release-plz
     runs-on: ubuntu-latest
-    needs: wasmstan
     steps:
-      - uses: actions/download-artifact@v4
-        with:
-          name: prophet-wasmstan.wasm
-          path: crates/augurs-prophet
       - name: Checkout repository
         uses: actions/checkout@v4
         with:
diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 17a71b10..f1b2008a 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -22,14 +22,9 @@ jobs:
       - name: Run cargo check
         run: cargo check --all-targets --all-features
 
-  wasmstan:
-    name: Prophet WASMStan component
-    uses: grafana/augurs/.github/workflows/wasmstan.yml@main
-
   test:
     name: Tests
     runs-on: ubuntu-latest
-    needs: wasmstan
     steps:
       - name: Checkout sources
         uses: actions/checkout@v4
@@ -41,13 +36,6 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
-      # Download the Prophet wasmstan module since an example and some doctests require it.
-      - name: Download Prophet WASMStan component artifact
-        uses: actions/download-artifact@v4
-        with:
-          name: prophet-wasmstan.wasm
-          path: crates/augurs-prophet
-
       # Download the Prophet Stan model since an example requires it.
       - name: Download Prophet Stan model
         run: just download-prophet-stan-model
@@ -62,7 +50,6 @@ jobs:
   test-book:
     name: Test Book
     runs-on: ubuntu-latest
-    needs: wasmstan
     steps:
       - name: Checkout sources
         uses: actions/checkout@v4
@@ -74,13 +61,6 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
-      # Download the Prophet wasmstan module since an example and some doctests require it.
-      - name: Download Prophet WASMStan component artifact
-        uses: actions/download-artifact@v4
-        with:
-          name: prophet-wasmstan.wasm
-          path: crates/augurs-prophet
-
       # The book tests require the augurs library to be built. In CI, we cache the result
       # of the build so that we don't have to rebuild it every time, but this can result
       # in multiple 'augurs' rlibs being present in the book's target directory. This
diff --git a/.github/workflows/wasmstan.yml b/.github/workflows/wasmstan.yml
index 50bc3d2d..dd2b29f8 100644
--- a/.github/workflows/wasmstan.yml
+++ b/.github/workflows/wasmstan.yml
@@ -1,7 +1,9 @@
-name: prophet-wasmstan
+name: build-prophet-wasmstan
 
 on:
-  workflow_call:
+  push:
+    branches: ["main"]
+  pull_request:
 
 env:
   CARGO_TERM_COLOR: always
@@ -13,8 +15,6 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@stable
-      with:
-        targets: wasm32-unknown-unknown,wasm32-wasip1
     - uses: taiki-e/install-action@v2
       with:
         tool: cargo-binstall,just,ripgrep,wasmtime
@@ -31,3 +31,7 @@ jobs:
       with:
         name: prophet-wasmstan.wasm
         path: components/cpp/prophet-wasmstan/prophet-wasmstan.wasm
+    - name: Copy prophet-wasmstan.wasm to augurs
+      run: just copy-component-wasm
+    - name: Ensure no diffs
+      run: git diff --exit-code -- crates/augurs-prophet/prophet-wasmstan.wasm
diff --git a/book/src/contributing.md b/book/src/contributing.md
index a25161b6..29ba094e 100644
--- a/book/src/contributing.md
+++ b/book/src/contributing.md
@@ -20,17 +20,15 @@ There are many ways to contribute:
 4. Install [`cargo-binstall`][binstall] to install dependencies
 5. Install dependencies:
 ```bash
-(cd components && just install-deps)
+just components/install-deps
 ```
-6. Build the WASM component:
-```bash
-just build-component
-```
-7. Start building and checking the project using [bacon]:
+
+6. Start building and checking the project using [bacon]:
 ```bash
 just watch
 ```
-8. Run tests using [nextest]:
+
+7. Run tests using [nextest]:
 ```bash
 just test
 ```
diff --git a/components/cpp/prophet-wasmstan/prophet_wasmstan.cpp b/components/cpp/prophet-wasmstan/prophet_wasmstan.cpp
index 7037244d..fc9da61f 100644
--- a/components/cpp/prophet-wasmstan/prophet_wasmstan.cpp
+++ b/components/cpp/prophet-wasmstan/prophet_wasmstan.cpp
@@ -1,4 +1,4 @@
-// Generated by `wit-bindgen` 0.34.0. DO NOT EDIT!
+// Generated by `wit-bindgen` 0.36.0. DO NOT EDIT!
 #include "prophet_wasmstan.h"
 #include <stdlib.h>
 #include <string.h>
diff --git a/components/cpp/prophet-wasmstan/prophet_wasmstan.h b/components/cpp/prophet-wasmstan/prophet_wasmstan.h
index 47ba4811..7de26f03 100644
--- a/components/cpp/prophet-wasmstan/prophet_wasmstan.h
+++ b/components/cpp/prophet-wasmstan/prophet_wasmstan.h
@@ -1,4 +1,4 @@
-// Generated by `wit-bindgen` 0.34.0. DO NOT EDIT!
+// Generated by `wit-bindgen` 0.36.0. DO NOT EDIT!
 #ifndef __BINDINGS_PROPHET_WASMSTAN_H
 #define __BINDINGS_PROPHET_WASMSTAN_H
 #ifdef __cplusplus
diff --git a/components/justfile b/components/justfile
index 8bdae83c..69744a56 100644
--- a/components/justfile
+++ b/components/justfile
@@ -1,11 +1,15 @@
 TOOLS_DIR := "./tools"
-WIT_BINDGEN_VERSION := "0.34.0"
 WASI_ARCH := `uname -m`
 WASI_OS := os()
 WASI_VERSION := "24"
 WASI_VERSION_FULL := WASI_VERSION + ".0"
 WASI_SDK_PATH := "wasi-sdk-" + WASI_VERSION_FULL + "-" + WASI_ARCH + "-" + WASI_OS
 
+CARGO_COMPONENT_VERSION := "0.19.0"
+WIT_BINDGEN_CLI_VERSION := "0.36.0"
+WASM_TOOLS_VERSION := "1.222.0"
+WAC_CLI_VERSION := "0.6.1"
+
 CLANG := TOOLS_DIR + "/" + WASI_SDK_PATH + "/bin/clang"
 CLANG_CPP := TOOLS_DIR + "/" + WASI_SDK_PATH + "/bin/clang++"
 
@@ -15,15 +19,15 @@ checkout-submodules:
 
 # Install dependencies to work with WASI.
 install-deps: checkout-submodules
-  cargo binstall -y cargo-component
-  cargo binstall -y wit-bindgen-cli@{{WIT_BINDGEN_VERSION}}
-  cargo binstall -y wasm-tools
-  cargo binstall -y wac-cli
-  curl https://wasmtime.dev/install.sh -sSf | bash
+  cargo binstall -y cargo-component@{{CARGO_COMPONENT_VERSION}}
+  cargo binstall -y wit-bindgen-cli@{{WIT_BINDGEN_CLI_VERSION}}
+  cargo binstall -y wasm-tools@{{WASM_TOOLS_VERSION}}
+  cargo binstall -y wac-cli@{{WAC_CLI_VERSION}}
   npm install --yes -g @bytecodealliance/jco
   curl -LO https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-{{WASI_VERSION}}/{{WASI_SDK_PATH}}.tar.gz
   tar -xf {{WASI_SDK_PATH}}.tar.gz
   rm {{WASI_SDK_PATH}}.tar.gz
+  rm -rf {{TOOLS_DIR}}
   mkdir -p {{TOOLS_DIR}}
   mv {{WASI_SDK_PATH}} {{TOOLS_DIR}}
   curl -Lo {{TOOLS_DIR}}/wasi_snapshot_preview1.wasm https://github.com/bytecodealliance/wasmtime/releases/download/v17.0.0/wasi_snapshot_preview1.reactor.wasm
diff --git a/crates/augurs-prophet/.gitignore b/crates/augurs-prophet/.gitignore
index a9ce1bf8..b21fda12 100644
--- a/crates/augurs-prophet/.gitignore
+++ b/crates/augurs-prophet/.gitignore
@@ -1,2 +1 @@
 /prophet_stan_model
-prophet-wasmstan.wasm
diff --git a/crates/augurs-prophet/prophet-wasmstan.wasm b/crates/augurs-prophet/prophet-wasmstan.wasm
new file mode 100644
index 00000000..9650db97
Binary files /dev/null and b/crates/augurs-prophet/prophet-wasmstan.wasm differ
diff --git a/justfile b/justfile
index 0601fcb0..53ecdbcf 100644
--- a/justfile
+++ b/justfile
@@ -49,6 +49,9 @@ watch:
 download-prophet-stan-model:
   cargo run --features download --bin download-stan-model
 
-build-component:
-  just components/build
+copy-component-wasm:
   cp components/cpp/prophet-wasmstan/prophet-wasmstan.wasm crates/augurs-prophet/prophet-wasmstan.wasm
+
+# Rebuild the prophet-wasmstan WASM component. Requires a local runner with the `act` tool.
+rebuild-component:
+  act --bind --artifact-server-path=/tmp/artifacts -W ./.github/workflows/wasmstan.yml