diff --git a/api/build.gradle.kts b/api/build.gradle.kts
index 30ba2c4..b424c68 100644
--- a/api/build.gradle.kts
+++ b/api/build.gradle.kts
@@ -7,7 +7,7 @@ plugins {
 
 ext {
     set("PUBLISH_GROUP_ID", Configuration.Api.artifactGroup)
-    if (Configuration.Api.isSnapshot || rootProject.ext["snapshot"] as Boolean) {
+    if (Configuration.Api.isSnapshot || rootProject.ext["snapshot"] as? Boolean == true) {
         set("PUBLISH_VERSION", Configuration.Api.snapshotVersionName)
     } else {
         set("PUBLISH_VERSION", Configuration.Api.versionName)