diff --git a/build.gradle b/build.gradle
index e0744808..2fa83bbd 100644
--- a/build.gradle
+++ b/build.gradle
@@ -41,7 +41,7 @@ gradle.projectsEvaluated {
 
 dependencies {
     implementation 'javax.validation:validation-api:2.0.1.Final'
-    implementation 'com.graphql-java:graphql-java:19.3'
+    implementation 'com.graphql-java:graphql-java:19.5'
     implementation 'com.graphql-java:graphql-java-extended-scalars:19.1'
     implementation 'javax.xml.bind:jaxb-api:2.3.1'
 
@@ -53,6 +53,7 @@ dependencies {
 
     testImplementation 'org.testng:testng:7.7.1'
     testImplementation 'org.hamcrest:hamcrest-all:1.3'
+    // FIXME: do not upgrade to 5.x yet, bytebuddy issues
     testImplementation 'org.mockito:mockito-core:4.11.0'
 }
 
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 943f0cbf..ccebba77 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index f398c33c..bdc9a83b 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.6-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.0.2-bin.zip
 networkTimeout=10000
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
index 65dcd68d..79a61d42 100755
--- a/gradlew
+++ b/gradlew
@@ -144,7 +144,7 @@ if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
     case $MAX_FD in #(
       max*)
         # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC3045 
+        # shellcheck disable=SC3045
         MAX_FD=$( ulimit -H -n ) ||
             warn "Could not query maximum file descriptor limit"
     esac
@@ -152,7 +152,7 @@ if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
       '' | soft) :;; #(
       *)
         # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC3045 
+        # shellcheck disable=SC3045
         ulimit -n "$MAX_FD" ||
             warn "Could not set maximum file descriptor limit to $MAX_FD"
     esac