diff --git a/acme4j-client/pom.xml b/acme4j-client/pom.xml
index 22eb3e61..3ad819bf 100644
--- a/acme4j-client/pom.xml
+++ b/acme4j-client/pom.xml
@@ -70,7 +70,7 @@
         </dependency>
         <dependency>
             <groupId>org.bouncycastle</groupId>
-            <artifactId>bcpg-jdk15on</artifactId>
+            <artifactId>bcpg-jdk18on</artifactId>
             <version>${bouncycastle.version}</version>
             <scope>test</scope>
         </dependency>
diff --git a/acme4j-smime/pom.xml b/acme4j-smime/pom.xml
index 3f6dc5ee..cf6b8e72 100644
--- a/acme4j-smime/pom.xml
+++ b/acme4j-smime/pom.xml
@@ -41,12 +41,12 @@
         </dependency>
         <dependency>
             <groupId>org.bouncycastle</groupId>
-            <artifactId>bcprov-jdk15on</artifactId>
+            <artifactId>bcprov-jdk18on</artifactId>
             <version>${bouncycastle.version}</version>
         </dependency>
         <dependency>
             <groupId>org.bouncycastle</groupId>
-            <artifactId>bcpkix-jdk15on</artifactId>
+            <artifactId>bcpkix-jdk18on</artifactId>
             <version>${bouncycastle.version}</version>
         </dependency>
         <dependency>
diff --git a/acme4j-utils/pom.xml b/acme4j-utils/pom.xml
index b1193722..8456a112 100644
--- a/acme4j-utils/pom.xml
+++ b/acme4j-utils/pom.xml
@@ -36,12 +36,12 @@
         </dependency>
         <dependency>
             <groupId>org.bouncycastle</groupId>
-            <artifactId>bcprov-jdk15on</artifactId>
+            <artifactId>bcprov-jdk18on</artifactId>
             <version>${bouncycastle.version}</version>
         </dependency>
         <dependency>
             <groupId>org.bouncycastle</groupId>
-            <artifactId>bcpkix-jdk15on</artifactId>
+            <artifactId>bcpkix-jdk18on</artifactId>
             <version>${bouncycastle.version}</version>
         </dependency>
         <dependency>
diff --git a/pom.xml b/pom.xml
index 3f62813f..983c9605 100644
--- a/pom.xml
+++ b/pom.xml
@@ -51,11 +51,11 @@
     </developers>
 
     <properties>
-        <bouncycastle.version>1.70</bouncycastle.version>
+        <bouncycastle.version>1.72</bouncycastle.version>
         <httpclient.version>4.5.13</httpclient.version>
         <jakarta.mail.version>2.0.1</jakarta.mail.version>
-        <jose4j.version>0.7.12</jose4j.version>
-        <slf4j.version>1.7.36</slf4j.version>
+        <jose4j.version>0.9.2</jose4j.version>
+        <slf4j.version>2.0.3</slf4j.version>
         <project.build.sourceEncoding>utf-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>utf-8</project.reporting.outputEncoding>
     </properties>
@@ -193,7 +193,7 @@
         <dependency>
             <groupId>com.github.spotbugs</groupId>
             <artifactId>spotbugs-annotations</artifactId>
-            <version>4.7.1</version>
+            <version>4.7.3</version>
             <optional>true</optional>
             <exclusions>
                 <exclusion>
@@ -205,13 +205,13 @@
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-api</artifactId>
-            <version>5.8.2</version>
+            <version>5.9.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-params</artifactId>
-            <version>5.8.2</version>
+            <version>5.9.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>
@@ -223,20 +223,20 @@
         <dependency>
             <groupId>net.javacrumbs.json-unit</groupId>
             <artifactId>json-unit-assertj</artifactId>
-            <version>2.35.0</version>
+            <version>2.36.0</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <!-- Required by json-unit-assertj -->
             <groupId>org.json</groupId>
             <artifactId>json</artifactId>
-            <version>20220320</version>
+            <version>20220924</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.mockito</groupId>
             <artifactId>mockito-core</artifactId>
-            <version>4.6.1</version>
+            <version>4.8.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>