diff --git a/bosk-mongo/build.gradle b/bosk-mongo/build.gradle
index cb8448f9..792720b0 100644
--- a/bosk-mongo/build.gradle
+++ b/bosk-mongo/build.gradle
@@ -10,7 +10,7 @@ archivesBaseName = 'bosk-mongo'
 
 dependencies {
 	api project(":bosk-core")
-	api "org.mongodb:mongo-java-driver:3.12.11" // Supports up to MongoDB 4.4: http://mongodb.github.io/mongo-java-driver/3.12/upgrading/
+	api 'org.mongodb:mongodb-driver-sync:4.1.2'
 	testImplementation project(":bosk-testing")
 	testImplementation project(":lib-testing")
 }