diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 1ca02ea1..80d94266 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -19,7 +19,7 @@ scrimage-core = { module = "com.sksamuel.scrimage:scrimage-core", version.ref =
 scrimage-formats-extra = { module = "com.sksamuel.scrimage:scrimage-formats-extra", version.ref = "scrimage" }
 scrimage-webp = { module = "com.sksamuel.scrimage:scrimage-webp", version.ref = "scrimage" }
 slf4j-api = "org.slf4j:slf4j-api:2.0.17"
-telegram-bot-api = "com.github.pengrad:java-telegram-bot-api:8.3.0"
+telegram-bot-api = "com.github.pengrad:java-telegram-bot-api:9.2.0"
 tika = "org.apache.tika:tika-core:3.2.2"
 
 [plugins]
diff --git a/src/main/java/com/github/stickerifier/stickerify/media/MediaHelper.java b/src/main/java/com/github/stickerifier/stickerify/media/MediaHelper.java
index 1bcd38eb..9b87c8fc 100644
--- a/src/main/java/com/github/stickerifier/stickerify/media/MediaHelper.java
+++ b/src/main/java/com/github/stickerifier/stickerify/media/MediaHelper.java
@@ -25,6 +25,7 @@
 import com.sksamuel.scrimage.ImmutableImage;
 import com.sksamuel.scrimage.webp.WebpWriter;
 import org.apache.tika.Tika;
+import org.jetbrains.annotations.NotNull;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import ws.schild.jave.EncoderException;
@@ -152,6 +153,7 @@ private float duration() {
 			return (end - start) / frameRate;
 		}
 
+		@NotNull
 		@Override
 		public String toString() {
 			return "animated sticker [" +
diff --git a/src/main/java/com/github/stickerifier/stickerify/telegram/model/TelegramRequest.java b/src/main/java/com/github/stickerifier/stickerify/telegram/model/TelegramRequest.java
index 84805cc8..f1e5f86c 100644
--- a/src/main/java/com/github/stickerifier/stickerify/telegram/model/TelegramRequest.java
+++ b/src/main/java/com/github/stickerifier/stickerify/telegram/model/TelegramRequest.java
@@ -12,6 +12,7 @@
 import com.pengrad.telegrambot.model.Sticker;
 import com.pengrad.telegrambot.model.Video;
 import com.pengrad.telegrambot.model.VideoNote;
+import org.jetbrains.annotations.NotNull;
 
 import java.util.Arrays;
 import java.util.Objects;
@@ -59,7 +60,7 @@ private TelegramFile getBestPhoto(PhotoSize[] photos) {
 				.orElse(TelegramFile.TOO_LARGE);
 	}
 
-	public Long getChatId() {
+	public long getChatId() {
 		return message.chat().id();
 	}
 
@@ -95,6 +96,7 @@ public Answer getAnswerMessage() {
 		};
 	}
 
+	@NotNull
 	@Override
 	public String toString() {
 		var file = Optional.ofNullable(getFile()).map(TelegramFile::id).orElse(null);