diff --git a/acceptance-tests/build.gradle b/acceptance-tests/build.gradle
index 2c3bbc4c4..fa997233b 100644
--- a/acceptance-tests/build.gradle
+++ b/acceptance-tests/build.gradle
@@ -23,7 +23,7 @@ dependencies {
   testRuntimeOnly 'javax.activation:activation'
   testRuntimeOnly 'org.apache.logging.log4j:log4j-core'
   testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine'
-  testRuntimeOnly 'org.bouncycastle:bcpkix-jdk15on'
+  testRuntimeOnly 'org.bouncycastle:bcpkix-jdk18on'
 
   testImplementation project(':ethsigner:core')
   testImplementation project(':ethsigner:app')
diff --git a/ethsigner/core/build.gradle b/ethsigner/core/build.gradle
index 729b0a951..e82313e4a 100644
--- a/ethsigner/core/build.gradle
+++ b/ethsigner/core/build.gradle
@@ -42,7 +42,7 @@ dependencies {
 
   runtimeOnly 'org.apache.logging.log4j:log4j-core'
   runtimeOnly 'org.apache.logging.log4j:log4j-slf4j-impl'
-  runtimeOnly 'org.bouncycastle:bcpkix-jdk15on'
+  runtimeOnly 'org.bouncycastle:bcpkix-jdk18on'
 
   testImplementation 'io.vertx:vertx-codegen'
   testImplementation 'org.junit.jupiter:junit-jupiter-api'
diff --git a/gradle/versions.gradle b/gradle/versions.gradle
index f38e071fd..ed1e65f84 100644
--- a/gradle/versions.gradle
+++ b/gradle/versions.gradle
@@ -20,7 +20,7 @@ dependencyManagement {
       entry 'error_prone_test_helpers'
     }
 
-    dependency 'com.google.guava:guava:31.1-jre'
+    dependency 'com.google.guava:guava:32.0.1-jre'
 
     dependency 'com.squareup.okhttp3:okhttp:4.10.0'
 
@@ -55,9 +55,9 @@ dependencyManagement {
 
     dependency 'org.awaitility:awaitility:4.1.1'
 
-    dependencySet(group: 'org.bouncycastle', version: '1.70') {
-      entry 'bcpkix-jdk15on'
-      entry 'bcprov-jdk15on'
+    dependencySet(group: 'org.bouncycastle', version: '1.74') {
+      entry 'bcpkix-jdk18on'
+      entry 'bcprov-jdk18on'
     }
 
     dependencySet(group: 'org.junit.jupiter', version: '5.8.2') {
@@ -94,7 +94,7 @@ dependencyManagement {
     dependency "org.hyperledger.besu.internal:metrics-core:${besuVersion}"
 
     // explicit declaring to override transitive dependencies with vulnerabilities
-    dependency 'com.fasterxml.jackson.core:jackson-databind:2.14.2'
+    dependency 'com.fasterxml.jackson.core:jackson-databind:2.15.2'
     dependencySet(group: 'com.google.protobuf', version: '3.21.12') {
       /*
         com.google.protobuf:protobuf-java:3.11.4 -> 3.21.9 // CVE-2022-3509
@@ -104,7 +104,7 @@ dependencyManagement {
       entry 'protobuf-java'
       entry 'protobuf-java-util'
     }
-    dependencySet(group: 'io.grpc', version: '1.45.1') {
+    dependencySet(group: 'io.grpc', version: '1.56.0') {
       entry 'grpc-api'
       entry 'grpc-context'
       entry 'grpc-core'