diff --git a/.github/workflows/java-ci.yml b/.github/workflows/java-ci.yml
index 3ce1f468..83995b4b 100644
--- a/.github/workflows/java-ci.yml
+++ b/.github/workflows/java-ci.yml
@@ -14,11 +14,11 @@ jobs:
         id: vars
         run: echo "::set-output name=sha_short::$(git rev-parse --short HEAD)"
 
-      - name: Set up JDK 16
+      - name: Set up JDK 17
         uses: actions/setup-java@v2
         with:
           distribution: 'adopt'
-          java-version: 16
+          java-version: 17
 
       - name: Setup build cache
         uses: actions/cache@v2.1.6
diff --git a/.github/workflows/publish-release.yml b/.github/workflows/publish-release.yml
index 7245011f..d046ddc0 100644
--- a/.github/workflows/publish-release.yml
+++ b/.github/workflows/publish-release.yml
@@ -12,11 +12,11 @@ jobs:
       - name: Checkout latest code
         uses: actions/checkout@v2
 
-      - name: Set up JDK 16
+      - name: Set up JDK 17
         uses: actions/setup-java@v2
         with:
           distribution: 'adopt'
-          java-version: 16
+          java-version: 17
 
       - name: Setup build cache
         uses: actions/cache@v2.1.6
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 99c6e064..b65d57db 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -21,4 +21,4 @@
 
 ## Other
 - All drops **must** be sent through a DropQueue - calls to World#dropItem will get your PR rejected.
-- eco is built with java 16.
\ No newline at end of file
+- eco is built with java 17.
\ No newline at end of file
diff --git a/build.gradle.kts b/build.gradle.kts
index c0dc4cbc..f75b7207 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -94,8 +94,8 @@ allprojects {
         }
 
         java {
-            sourceCompatibility = JavaVersion.VERSION_16
-            targetCompatibility = JavaVersion.VERSION_16
+            sourceCompatibility = JavaVersion.VERSION_17
+            targetCompatibility = JavaVersion.VERSION_17
             withSourcesJar()
         }
 
diff --git a/eco-core/build.gradle b/eco-core/build.gradle
index 7dcd033f..f88cbc98 100644
--- a/eco-core/build.gradle
+++ b/eco-core/build.gradle
@@ -21,9 +21,9 @@ subprojects {
 
     compileKotlin {
         kotlinOptions {
-            jvmTarget = "16"
+            jvmTarget = "17"
         }
-        targetCompatibility = JavaVersion.VERSION_16
-        sourceCompatibility = JavaVersion.VERSION_16
+        targetCompatibility = JavaVersion.VERSION_17
+        sourceCompatibility = JavaVersion.VERSION_17
     }
 }
\ No newline at end of file
diff --git a/jitpack.yml b/jitpack.yml
index 996a9f0b..31560e64 100644
--- a/jitpack.yml
+++ b/jitpack.yml
@@ -1,6 +1,6 @@
-jdk: openjdk16
+jdk: openjdk17
 before_install:
   - source "$HOME/.sdkman/bin/sdkman-init.sh"
   - sdk update
-  - sdk install java 16.0.1-open
-  - sdk use java 16.0.1-open
\ No newline at end of file
+  - sdk install java 17.0.1-open
+  - sdk use java 17.0.1-open
\ No newline at end of file