diff --git a/build.gradle.kts b/build.gradle.kts
index 4b1f94a..be01b2d 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -48,7 +48,7 @@ dependencies {
     implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.9.0")
 
     // langchain4j integrations
-    implementation(platform("dev.langchain4j:langchain4j-bom:1.8.0"))
+    implementation(platform("dev.langchain4j:langchain4j-bom:1.9.1"))
     implementation("dev.langchain4j:langchain4j-open-ai")
     implementation("dev.langchain4j:langchain4j-ollama")
     implementation("dev.langchain4j:langchain4j-vertex-ai-gemini")