diff --git a/app/src/main/java/eu/kanade/tachiyomi/AppInfo.kt b/app/src/main/java/eu/kanade/tachiyomi/AppInfo.kt
new file mode 100644
index 0000000000..5cb55af209
--- /dev/null
+++ b/app/src/main/java/eu/kanade/tachiyomi/AppInfo.kt
@@ -0,0 +1,11 @@
+package eu.kanade.tachiyomi
+
+/**
+ * Used by extensions.
+ *
+ * @since extension-lib 1.3
+ */
+object AppInfo {
+    fun getVersionCode() = BuildConfig.VERSION_CODE
+    fun getVersionName() = BuildConfig.VERSION_NAME
+}
\ No newline at end of file
diff --git a/app/src/main/java/eu/kanade/tachiyomi/network/interceptor/RateLimitInterceptor.kt b/app/src/main/java/eu/kanade/tachiyomi/network/interceptor/RateLimitInterceptor.kt
index 241e4923ce..a776f2b5f7 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/network/interceptor/RateLimitInterceptor.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/network/interceptor/RateLimitInterceptor.kt
@@ -14,6 +14,8 @@ import java.util.concurrent.TimeUnit
  * permits = 5,  period = 1, unit = seconds  =>  5 requests per second
  * permits = 10, period = 2, unit = minutes  =>  10 requests per 2 minutes
  *
+ * @since extension-lib 1.3
+ *
  * @param permits {Int}   Number of requests allowed within a period of units.
  * @param period {Long}   The limiting duration. Defaults to 1.
  * @param unit {TimeUnit} The unit of time for the period. Defaults to seconds.
diff --git a/app/src/main/java/eu/kanade/tachiyomi/network/interceptor/SpecificHostRateLimitInterceptor.kt b/app/src/main/java/eu/kanade/tachiyomi/network/interceptor/SpecificHostRateLimitInterceptor.kt
index bce9b3f2df..ec7a8fdb1d 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/network/interceptor/SpecificHostRateLimitInterceptor.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/network/interceptor/SpecificHostRateLimitInterceptor.kt
@@ -15,6 +15,8 @@ import java.util.concurrent.TimeUnit
  * httpUrl = "api.manga.com".toHttpUrlOrNull(), permits = 5, period = 1, unit = seconds  =>  5 requests per second to api.manga.com
  * httpUrl = "imagecdn.manga.com".toHttpUrlOrNull(), permits = 10, period = 2, unit = minutes  =>  10 requests per 2 minutes to imagecdn.manga.com
  *
+ * @since extension-lib 1.3
+ *
  * @param httpUrl {HttpUrl} The url host that this interceptor should handle. Will get url's host by using HttpUrl.host()
  * @param permits {Int}   Number of requests allowed within a period of units.
  * @param period {Long}   The limiting duration. Defaults to 1.