diff --git a/.evergreen/config.yml b/.evergreen/config.yml
index 2fb870f0..e42beab7 100644
--- a/.evergreen/config.yml
+++ b/.evergreen/config.yml
@@ -80,6 +80,7 @@ functions:
       params:
         working_dir: src
         binary: bash
+        add_expansions_to_env: true
         args:
           - .evergreen/install-dependencies.sh
         env:
diff --git a/.evergreen/install-dependencies.sh b/.evergreen/install-dependencies.sh
index 9f0f1bb4..aac2abde 100644
--- a/.evergreen/install-dependencies.sh
+++ b/.evergreen/install-dependencies.sh
@@ -10,7 +10,7 @@ export NODE_LTS_VERSION=${NODE_LTS_VERSION:-14}
 # a version lower than latest to support EOL Node versions.
 export NPM_VERSION=${NPM_VERSION:-latest}
 
-source ./.drivers-tools/.evergreen/install-node.sh
+source $DRIVERS_TOOLS/.evergreen/install-node.sh
 
 npm install --build-from-source
 ldd build/*/kerberos.node || true