diff --git a/lib/deps.json b/lib/deps.json
index 6dbb5b1..bdb42aa 100644
--- a/lib/deps.json
+++ b/lib/deps.json
@@ -142,7 +142,7 @@
     "jsr305": "mvn:com.google.code.findbugs:jsr305:3.0.1",
     "junit": "mvn:junit:junit:4.12",
     "kryo": "mvn:com.esotericsoftware:kryo:3.0.3",
-    "mapdb": "mvn:org.mapdb:mapdb:1.0.8",
+    "mapdb": "mvn:org.mapdb:mapdb:1.0.9",
     "metrics-core": "mvn:io.dropwizard.metrics:metrics-core:3.1.0",
     "metrics-ganglia": "mvn:io.dropwizard.metrics:metrics-ganglia:3.1.2",
     "metrics-graphite": "mvn:io.dropwizard.metrics:metrics-graphite:3.1.2",