diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 88ba608..ffad0d6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,6 +30,19 @@ jobs:
       # The dependency build dominates the runtime; cache it on the lockfile.
       - uses: Swatinem/rust-cache@v2
 
+      # Every CI run contributes this build to the public compile-time census
+      # at <https://cratebank.io/>. It builds what the steps below would have
+      # built anyway, measured, so what is added here is mostly the measuring.
+      #
+      # `strict` because this is the build. A measurement that quietly did not
+      # happen would mean nothing built the project either, and a green check
+      # would be saying so about work that never ran.
+      - uses: PowderworksCode/cratebank/action@v0.1.1
+        with:
+          args: --workspace
+          org-id: powderworks
+          strict: "true"
+
       - name: Format
         run: cargo fmt --all --check
 
diff --git a/Cargo.toml b/Cargo.toml
index 1819f0f..60c6d12 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,3 +9,10 @@ license = "MIT"
 
 [profile.release]
 lto = "thin"
+
+[workspace.metadata.cratebank]
+# Opted in: this repository is public, so its crate names are already
+# public. Without this the census records the build and withholds the
+# names, which for an open repository is precision nobody asked for.
+public = true
+repository = "https://github.com/PowderworksCode/immersion"