diff --git a/pom.xml b/pom.xml
index 5015045a2c4f215143aa24ef005e21489bc9c932..0d04581d5b456c4325c0ab7d830fec4ac4cb4a95 100644
--- a/pom.xml
+++ b/pom.xml
@@ -66,7 +66,7 @@
 
         <!--  3th part versions -->
         <apollo.version>2.1.0</apollo.version>
-        <bouncycastle.version>1.72</bouncycastle.version>
+        <bouncycastle.version>1.73</bouncycastle.version>
         <cglib.version>3.3.0</cglib.version>
         <curator.version>5.4.0</curator.version>
         <com.google.zxing.version>3.5.1</com.google.zxing.version>