diff --git a/core/pom.xml b/core/pom.xml
index 9146f3c..d59ab2f 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -17,7 +17,7 @@
 		<dependency>
 			<groupId>org.apache.httpcomponents</groupId>
 			<artifactId>httpclient</artifactId>
-			<version>4.3.6</version>
+			<version>4.5.13</version>
 		</dependency>
 		<dependency>
 			<groupId>com.fasterxml.jackson.core</groupId>
diff --git a/examples/pom.xml b/examples/pom.xml
index 7f5bfef..c1c2e8a 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -26,7 +26,7 @@
 		</dependency>
 		<dependency>
 			<groupId>org.slf4j</groupId>
-			<artifactId>slf4j-log4j12</artifactId>
+			<artifactId>slf4j-api</artifactId>
 			<version>${slf4j.version}</version>
 		</dependency>
 		<dependency>
diff --git a/pom.xml b/pom.xml
index b3cc358..8cb67b1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -37,7 +37,7 @@
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 
 		<jdk.version>1.8</jdk.version>
-		<jackson.version>2.9.0</jackson.version>
+		<jackson.version>2.13.5</jackson.version>
 		<slf4j.version>1.7.25</slf4j.version>
 		<commons-lang.version>3.3.2</commons-lang.version>
 	</properties>
@@ -46,7 +46,7 @@
 		<dependency>
 			<groupId>org.projectlombok</groupId>
 			<artifactId>lombok</artifactId>
-			<version>1.18.2</version>
+			<version>1.18.26</version>
 			<scope>provided</scope>
 		</dependency>
 	</dependencies>