diff --git a/build.sbt b/build.sbt
index 5ec16b9..7c632ef 100644
--- a/build.sbt
+++ b/build.sbt
@@ -55,7 +55,7 @@ libraryDependencies ++= {
     "org.apache.jena" % "apache-jena-libs" % "3.17.0" exclude ("org.slf4j", "slf4j-log4j12"),
     "org.scalaz" %% "scalaz-core" % "7.2.33",
     "org.bbop" % "oboformat" % "0.5.5" exclude ("net.sourceforge.owlapi", "owlapi-apibinding") exclude ("log4j", "log4j"),
-    "ch.qos.logback" % "logback-classic" % "1.4.0",
+    "ch.qos.logback" % "logback-classic" % "1.4.13",
     "org.codehaus.groovy" % "groovy-all" % "3.0.8",
     "org.phenoscape" %% "sparql-utils" % "1.3.1" exclude ("log4j", "log4j"),
     "org.phenoscape" %% "sparql-utils-owlapi" % "1.3.1" exclude ("log4j", "log4j"),