diff --git a/pom.xml b/pom.xml
index 7759e751..484d9197 100644
--- a/pom.xml
+++ b/pom.xml
@@ -51,10 +51,10 @@
     </developers>
 
     <properties>
-        <bouncycastle.version>1.60</bouncycastle.version>
-        <httpclient.version>4.5.6</httpclient.version>
+        <bouncycastle.version>1.61</bouncycastle.version>
+        <httpclient.version>4.5.7</httpclient.version>
         <jose4j.version>0.6.5</jose4j.version>
-        <slf4j.version>1.7.25</slf4j.version>
+        <slf4j.version>1.7.26</slf4j.version>
         <project.build.sourceEncoding>utf-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>utf-8</project.reporting.outputEncoding>
     </properties>