diff --git a/server/build.gradle.kts b/server/build.gradle.kts
index 44645d1..dda27f4 100644
--- a/server/build.gradle.kts
+++ b/server/build.gradle.kts
@@ -59,7 +59,7 @@ sourceSets {
 }
 
 // should be bumped with each stable release
-val inspectorVersion = "v0.5.0"
+val inspectorVersion = "v0.5.1"
 
 // counts commit count on master
 val inspectorRevision = runCatching {
diff --git a/server/src/main/kotlin/eu/kanade/tachiyomi/BuildConfig.java b/server/src/main/kotlin/eu/kanade/tachiyomi/BuildConfig.java
deleted file mode 100644
index e121192..0000000
--- a/server/src/main/kotlin/eu/kanade/tachiyomi/BuildConfig.java
+++ /dev/null
@@ -1,6 +0,0 @@
-package eu.kanade.tachiyomi;
-
-public class BuildConfig {
-    public static int VERSION_CODE = -1;
-    public static String VERSION_NAME = "stub";
-}
diff --git a/server/src/main/kotlin/eu/kanade/tachiyomi/BuildConfig.kt b/server/src/main/kotlin/eu/kanade/tachiyomi/BuildConfig.kt
new file mode 100644
index 0000000..058a4e2
--- /dev/null
+++ b/server/src/main/kotlin/eu/kanade/tachiyomi/BuildConfig.kt
@@ -0,0 +1,8 @@
+package eu.kanade.tachiyomi
+
+class BuildConfig {
+    companion object {
+        const val VERSION_NAME = "stub"
+        const val VERSION_CODE = -1
+    }
+}