diff --git a/README.md b/README.md
index cdc52a7cb..a1ef88b7d 100644
--- a/README.md
+++ b/README.md
@@ -86,6 +86,9 @@ This project uses customized templates which lives in the `support/openapi-templ
 These templates resolves some outstanding issues we've experienced with the rust generator. But we
 strive towards modifying the templates as little as possible to ease future upgrades.
 
+Note: If you don't have the nightly toolchain installed, the `build-api.sh` script will install it
+for you.
+
 ## Tests
 
 Many of the SDK tests are based on encrypted data provided by the other Bitwarden clients. In order
diff --git a/support/build-api.sh b/support/build-api.sh
index a668b5564..ea295a523 100755
--- a/support/build-api.sh
+++ b/support/build-api.sh
@@ -22,5 +22,6 @@ npx openapi-generator-cli generate \
     -t ./support/openapi-template \
     --additional-properties=packageVersion=1.0.0
 
+rustup toolchain install nightly
 cargo +nightly fmt
 npm run prettier