diff --git a/build.gradle.kts b/build.gradle.kts
index 08797a2..3f25c98 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -124,9 +124,10 @@ signing {
     val signingKey = System.getenv("GPG_SECRET_KEY")
     val signingPassword = System.getenv("GPG_PASSPHRASE")
 
-    useInMemoryPgpKeys(signingKey, signingPassword)
-
-    sign(publishing.publications["mavenJava"])
+    if (signingKey != null && signingPassword != null) {
+        useInMemoryPgpKeys(signingKey, signingPassword)
+        sign(publishing.publications["mavenJava"])
+    }
 }
 
 tasks.withType<JavaCompile> {
diff --git a/jitpack.yml b/jitpack.yml
new file mode 100644
index 0000000..030b4c3
--- /dev/null
+++ b/jitpack.yml
@@ -0,0 +1,6 @@
+jdk:
+  - openjdk17
+before_install:
+  - sdk update
+  - sdk install java 17.0.12-open
+  - sdk use java 17.0.12-open
\ No newline at end of file