diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e7ba7782e..797708e31 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -23,10 +23,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
-    - name: set up JDK 8
+    - name: set up JDK 17
       uses: actions/setup-java@v2
       with:
-        java-version: '8'
+        java-version: '17'
         distribution: 'temurin'
         cache: gradle
     - name: Grant execute permission for gradlew
diff --git a/.github/workflows/java.yml b/.github/workflows/java.yml
index 1c6c57a02..d544ae7ce 100644
--- a/.github/workflows/java.yml
+++ b/.github/workflows/java.yml
@@ -51,7 +51,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        jdk: [8, 9]
+        jdk: [17, 20]
         optimizely_default_parser: [GSON_CONFIG_PARSER, JACKSON_CONFIG_PARSER, JSON_CONFIG_PARSER, JSON_SIMPLE_CONFIG_PARSER]
     steps:
       - name: checkout
diff --git a/build.gradle b/build.gradle
index b8405e39b..f1ac05102 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,10 +1,10 @@
 plugins {
     id 'com.github.kt3k.coveralls' version '2.8.2'
     id 'jacoco'
-    id 'me.champeau.gradle.jmh' version '0.4.5'
+    id 'me.champeau.gradle.jmh' version '0.5.3'
     id 'nebula.optional-base' version '3.2.0'
     id 'com.github.hierynomus.license' version '0.15.0'
-    id 'com.github.spotbugs' version "4.5.0"
+    id 'com.github.spotbugs' version "4.7.3"
 }
 
 allprojects {
@@ -43,8 +43,8 @@ configure(publishedProjects) {
     apply plugin: 'nebula.optional-base'
     apply plugin: 'com.github.hierynomus.license'
 
-    sourceCompatibility = 1.8
-    targetCompatibility = 1.8
+    sourceCompatibility = 17.0
+    targetCompatibility = 17.0
 
     repositories {
         jcenter()
@@ -94,21 +94,21 @@ configure(publishedProjects) {
     }
 
     dependencies {
-        compile group: 'commons-codec', name: 'commons-codec', version: commonCodecVersion
+        implementation group: 'commons-codec', name: 'commons-codec', version: commonCodecVersion
 
-        testCompile group: 'junit', name: 'junit', version: junitVersion
-        testCompile group: 'org.mockito', name: 'mockito-core', version: mockitoVersion
-        testCompile group: 'org.hamcrest', name: 'hamcrest-all', version: hamcrestVersion
-        testCompile group: 'com.google.guava', name: 'guava', version: guavaVersion
+        testImplementation group: 'junit', name: 'junit', version: junitVersion
+        testImplementation group: 'org.mockito', name: 'mockito-core', version: mockitoVersion
+        testImplementation group: 'org.hamcrest', name: 'hamcrest-all', version: hamcrestVersion
+        testImplementation group: 'com.google.guava', name: 'guava', version: guavaVersion
 
         // logging dependencies (logback)
-        testCompile group: 'ch.qos.logback', name: 'logback-classic', version: logbackVersion
-        testCompile group: 'ch.qos.logback', name: 'logback-core', version: logbackVersion
+        testImplementation group: 'ch.qos.logback', name: 'logback-classic', version: logbackVersion
+        testImplementation group: 'ch.qos.logback', name: 'logback-core', version: logbackVersion
 
-        testCompile group: 'com.google.code.gson', name: 'gson', version: gsonVersion
-        testCompile group: 'org.json', name: 'json', version: jsonVersion
-        testCompile group: 'com.googlecode.json-simple', name: 'json-simple', version: jsonSimpleVersion
-        testCompile group: 'com.fasterxml.jackson.core', name: 'jackson-databind', version: jacksonVersion
+        testImplementation group: 'com.google.code.gson', name: 'gson', version: gsonVersion
+        testImplementation group: 'org.json', name: 'json', version: jsonVersion
+        testImplementation group: 'com.googlecode.json-simple', name: 'json-simple', version: jsonSimpleVersion
+        testImplementation group: 'com.fasterxml.jackson.core', name: 'jackson-databind', version: jacksonVersion
     }
 
     def docTitle = "Optimizely Java SDK"
diff --git a/core-api/build.gradle b/core-api/build.gradle
index d2609a97d..f01a10dc5 100644
--- a/core-api/build.gradle
+++ b/core-api/build.gradle
@@ -1,9 +1,9 @@
 dependencies {
-    compile group: 'org.slf4j', name: 'slf4j-api', version: slf4jVersion
-    compile group: 'com.fasterxml.jackson.core', name: 'jackson-annotations', version: jacksonVersion
+    implementation group: 'org.slf4j', name: 'slf4j-api', version: slf4jVersion
+    implementation group: 'com.fasterxml.jackson.core', name: 'jackson-annotations', version: jacksonVersion
 
-    compile group: 'com.google.code.findbugs', name: 'annotations', version: findbugsAnnotationVersion
-    compile group: 'com.google.code.findbugs', name: 'jsr305', version: findbugsJsrVersion
+    implementation group: 'com.google.code.findbugs', name: 'annotations', version: findbugsAnnotationVersion
+    implementation group: 'com.google.code.findbugs', name: 'jsr305', version: findbugsJsrVersion
 
     // an assortment of json parsers
     compileOnly group: 'com.google.code.gson', name: 'gson', version: gsonVersion, optional
diff --git a/core-httpclient-impl/build.gradle b/core-httpclient-impl/build.gradle
index e4cdd4b99..a7fbd237c 100644
--- a/core-httpclient-impl/build.gradle
+++ b/core-httpclient-impl/build.gradle
@@ -1,8 +1,11 @@
 dependencies {
-    compile project(':core-api')
+    implementation group: 'org.slf4j', name: 'slf4j-api', version: slf4jVersion
+    implementation group: 'com.google.code.findbugs', name: 'annotations', version: findbugsAnnotationVersion
+    implementation group: 'com.google.code.findbugs', name: 'jsr305', version: findbugsJsrVersion
+    implementation project(':core-api')
     compileOnly group: 'com.google.code.gson', name: 'gson', version: gsonVersion
-    compile group: 'org.apache.httpcomponents', name: 'httpclient', version: httpClientVersion
-    testCompile 'org.mock-server:mockserver-netty:5.1.1'
+    implementation group: 'org.apache.httpcomponents', name: 'httpclient', version: httpClientVersion
+    testImplementation 'org.mock-server:mockserver-netty:5.1.1'
 }
 
 task exhaustiveTest {
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index a9a50f830..5775c1baa 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Mon Sep 24 09:56:45 PDT 2018
+#Fri Dec 27 07:11:37 BDT 2024
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-all.zip