diff --git a/pom.xml b/pom.xml
index 50bcb0e0..4ed843db 100644
--- a/pom.xml
+++ b/pom.xml
@@ -51,9 +51,9 @@
     </developers>
 
     <properties>
-        <bouncycastle.version>1.55</bouncycastle.version>
-        <jose4j.version>0.5.3</jose4j.version>
-        <slf4j.version>1.7.21</slf4j.version>
+        <bouncycastle.version>1.56</bouncycastle.version>
+        <jose4j.version>0.5.5</jose4j.version>
+        <slf4j.version>1.7.25</slf4j.version>
         <project.build.sourceEncoding>utf-8</project.build.sourceEncoding>
     </properties>