diff --git a/build.gradle b/build.gradle
index 4860ca59ef1..9b1cc1e5815 100644
--- a/build.gradle
+++ b/build.gradle
@@ -29,7 +29,7 @@ configure(allprojects) { project ->
 		imports {
 			mavenBom "com.fasterxml.jackson:jackson-bom:2.10.5"
 			mavenBom "io.netty:netty-bom:4.1.51.Final"
-			mavenBom "io.projectreactor:reactor-bom:Dysprosium-SR13"
+			mavenBom "io.projectreactor:reactor-bom:Dysprosium-SR14"
 			mavenBom "io.rsocket:rsocket-bom:1.0.3"
 			mavenBom "org.eclipse.jetty:jetty-bom:9.4.31.v20200723"
 			mavenBom "org.jetbrains.kotlin:kotlin-bom:1.3.72"
@@ -89,7 +89,7 @@ configure(allprojects) { project ->
 
 			dependency "com.h2database:h2:1.4.200"
 			dependency "com.github.ben-manes.caffeine:caffeine:2.8.6"
-			dependency "com.github.librepdf:openpdf:1.3.22"
+			dependency "com.github.librepdf:openpdf:1.3.23"
 			dependency "com.rometools:rome:1.12.2"
 			dependency "commons-io:commons-io:2.5"
 			dependency "io.vavr:vavr:0.10.3"
@@ -180,7 +180,7 @@ configure(allprojects) { project ->
 			dependency "org.testng:testng:6.14.3"
 			dependency "org.hamcrest:hamcrest:2.1"
 			dependency "org.awaitility:awaitility:3.1.6"
-			dependency "org.assertj:assertj-core:3.17.2"
+			dependency "org.assertj:assertj-core:3.18.1"
 			dependencySet(group: 'org.xmlunit', version: '2.6.2') {
 				entry 'xmlunit-assertj'
 				entry('xmlunit-matchers') {
@@ -193,7 +193,7 @@ configure(allprojects) { project ->
 				}
 				entry 'mockito-junit-jupiter'
 			}
-			dependency "io.mockk:mockk:1.10.0"
+			dependency "io.mockk:mockk:1.10.2"
 
 			dependency("net.sourceforge.htmlunit:htmlunit:2.43.0") {
 				exclude group: "commons-logging", name: "commons-logging"
@@ -326,7 +326,7 @@ configure([rootProject] + javaProjects) { project ->
 	}
 
 	checkstyle {
-		toolVersion = "8.36.2"
+		toolVersion = "8.37"
 		configDir = rootProject.file("src/checkstyle")
 	}