diff --git a/build.gradle b/build.gradle
index 3afbe10402..b1b650f1d2 100644
--- a/build.gradle
+++ b/build.gradle
@@ -27,7 +27,7 @@ configure(allprojects) { project ->
 	dependencyManagement {
 		imports {
 			mavenBom "com.fasterxml.jackson:jackson-bom:2.10.4"
-			mavenBom "io.netty:netty-bom:4.1.50.Final"
+			mavenBom "io.netty:netty-bom:4.1.51.Final"
 			mavenBom "io.projectreactor:reactor-bom:Dysprosium-BUILD-SNAPSHOT"
 			mavenBom "io.rsocket:rsocket-bom:1.0.1"
 			mavenBom "org.eclipse.jetty:jetty-bom:9.4.30.v20200611"
@@ -63,7 +63,7 @@ configure(allprojects) { project ->
 			dependency "io.reactivex.rxjava2:rxjava:2.2.19"
 			dependency "io.projectreactor.tools:blockhound:1.0.2.RELEASE"
 
-			dependency "com.caucho:hessian:4.0.62"
+			dependency "com.caucho:hessian:4.0.63"
 			dependency "com.fasterxml:aalto-xml:1.2.2"
 			dependency("com.fasterxml.woodstox:woodstox-core:6.1.1") {
 				exclude group: "stax", name: "stax-api"
@@ -75,7 +75,7 @@ configure(allprojects) { project ->
 				exclude group: "xpp3", name: "xpp3_min"
 				exclude group: "xmlpull", name: "xmlpull"
 			}
-			dependency "org.apache.johnzon:johnzon-jsonb:1.2.7"
+			dependency "org.apache.johnzon:johnzon-jsonb:1.2.8"
 			dependency("org.codehaus.jettison:jettison:1.3.8") {
 				exclude group: "stax", name: "stax-api"
 			}
@@ -87,8 +87,8 @@ configure(allprojects) { project ->
 			dependency "org.yaml:snakeyaml:1.26"
 
 			dependency "com.h2database:h2:1.4.200"
-			dependency "com.github.ben-manes.caffeine:caffeine:2.8.4"
-			dependency "com.github.librepdf:openpdf:1.3.19"
+			dependency "com.github.ben-manes.caffeine:caffeine:2.8.5"
+			dependency "com.github.librepdf:openpdf:1.3.20"
 			dependency "com.rometools:rome:1.12.2"
 			dependency "commons-io:commons-io:2.5"
 			dependency "io.vavr:vavr:0.10.3"
@@ -120,14 +120,14 @@ configure(allprojects) { project ->
 			dependency "org.webjars:webjars-locator-core:0.45"
 			dependency "org.webjars:underscorejs:1.8.3"
 
-			dependencySet(group: 'org.apache.tomcat', version: '9.0.36') {
+			dependencySet(group: 'org.apache.tomcat', version: '9.0.37') {
 				entry 'tomcat-util'
 				entry('tomcat-websocket') {
 					exclude group: "org.apache.tomcat", name: "tomcat-websocket-api"
 					exclude group: "org.apache.tomcat", name: "tomcat-servlet-api"
 				}
 			}
-			dependencySet(group: 'org.apache.tomcat.embed', version: '9.0.36') {
+			dependencySet(group: 'org.apache.tomcat.embed', version: '9.0.37') {
 				entry 'tomcat-embed-core'
 				entry 'tomcat-embed-websocket'
 			}