diff --git a/pom.xml b/pom.xml
index 96d10a6..0beb940 100644
--- a/pom.xml
+++ b/pom.xml
@@ -116,7 +116,7 @@
     <saxon-bundle-version>9.5.1-5_1</saxon-bundle-version>
     <scala-plugin-version>3.1.0</scala-plugin-version>
     <scala-version>2.11.11</scala-version>
-    <shiro-version>1.5.1</shiro-version>
+    <shiro-version>1.5.2</shiro-version>
     <scalatest-version>3.0.8</scalatest-version>
     <slf4j-version>1.7.25</slf4j-version>
     <snappy-version>1.1.2</snappy-version>