diff --git a/.evergreen/run-custom-csfle-tests.sh b/.evergreen/run-custom-csfle-tests.sh
index 007240f0334..33582b0057d 100644
--- a/.evergreen/run-custom-csfle-tests.sh
+++ b/.evergreen/run-custom-csfle-tests.sh
@@ -99,3 +99,8 @@ if [ $DRIVER_CSFLE_TEST_RESULT -ne 0 ]; then
   echo "Driver tests failed, look above for results"
   exit 1
 fi
+
+echo "Test legacy version of FLE bindings"
+rm -rf node_modules/mongodb-client-encryption
+npm install mongodb-client-encryption@"^1.2.7"
+npm run check:csfle
diff --git a/.evergreen/run-kerberos-tests.sh b/.evergreen/run-kerberos-tests.sh
index afc17c9682d..1c2b6d3b5f6 100644
--- a/.evergreen/run-kerberos-tests.sh
+++ b/.evergreen/run-kerberos-tests.sh
@@ -19,8 +19,13 @@ fi
 echo "Running kinit"
 kinit -k -t "$(pwd)/.evergreen/drivers.keytab" -p ${KRB5_PRINCIPAL}
 
-npm install kerberos
+set -o xtrace
+npm install kerberos@">=2.0.0-beta.0"
 npm run check:kerberos
 
+npm install kerberos@"^1.1.7"
+npm run check:kerberos
+set +o xtrace
+
 # destroy ticket
 kdestroy
diff --git a/.evergreen/run-tests.sh b/.evergreen/run-tests.sh
index 244e506ba63..b1f0dd96883 100755
--- a/.evergreen/run-tests.sh
+++ b/.evergreen/run-tests.sh
@@ -41,7 +41,7 @@ if [[ -z "${CLIENT_ENCRYPTION}" ]]; then
   unset AWS_ACCESS_KEY_ID;
   unset AWS_SECRET_ACCESS_KEY;
 else
-  npm install mongodb-client-encryption@">=1.2.6"
+  npm install mongodb-client-encryption@">=2.0.0-beta.0"
   pip install --upgrade boto3
 
   # Get access to the AWS temporary credentials: