diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 8db721f4..952d230e 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -20,10 +20,10 @@ plugins {
     alias(libs.plugins.openapi.generator)
 }
 
-val isCI = providers.systemProperty("CI").orElse("false").map { it.toBoolean() }
+val isCI = providers.environmentVariable("CI").orElse("false").map { it.toBoolean() }
 val shouldSign =
     isCI.zip(
-        providers.systemProperty("KEY_ALIAS").orElse("").map { it.isNotBlank() },
+        providers.environmentVariable("KEY_ALIAS").orElse("").map { it.isNotBlank() },
     ) { isCI, hasKey ->
         isCI && hasKey
     }