diff --git a/agents-kt-rag-langchain4j/build.gradle.kts b/agents-kt-rag-langchain4j/build.gradle.kts
index fd5bc0c6..140d87cf 100644
--- a/agents-kt-rag-langchain4j/build.gradle.kts
+++ b/agents-kt-rag-langchain4j/build.gradle.kts
@@ -28,12 +28,12 @@ dependencies {
     api(project(":agents-kt-rag"))
     // #3863 — locked to a stable minor; LangChain4j evolves its store API
     // independently, bump deliberately.
-    api("dev.langchain4j:langchain4j-core:1.16.2")
+    api("dev.langchain4j:langchain4j-core:1.16.3")
 
     testImplementation(kotlin("test"))
     testImplementation("org.jetbrains.kotlinx:kotlinx-coroutines-test:1.11.0")
     // InMemoryEmbeddingStore for hermetic adapter tests.
-    testImplementation("dev.langchain4j:langchain4j:1.16.2")
+    testImplementation("dev.langchain4j:langchain4j:1.16.3")
 }
 
 kotlin {
diff --git a/agents-kt-rag-langchain4j/gradle.lockfile b/agents-kt-rag-langchain4j/gradle.lockfile
index 03f402c3..1d22971a 100644
--- a/agents-kt-rag-langchain4j/gradle.lockfile
+++ b/agents-kt-rag-langchain4j/gradle.lockfile
@@ -5,8 +5,8 @@ com.fasterxml.jackson.core:jackson-annotations:2.21=compileClasspath,runtimeClas
 com.fasterxml.jackson.core:jackson-core:2.21.3=compileClasspath,runtimeClasspath,testCompileClasspath,testRuntimeClasspath
 com.fasterxml.jackson.core:jackson-databind:2.21.3=compileClasspath,runtimeClasspath,testCompileClasspath,testRuntimeClasspath
 com.fasterxml.jackson:jackson-bom:2.21.3=compileClasspath,runtimeClasspath,testCompileClasspath,testRuntimeClasspath
-dev.langchain4j:langchain4j-core:1.16.2=compileClasspath,runtimeClasspath,testCompileClasspath,testRuntimeClasspath
-dev.langchain4j:langchain4j:1.16.2=testCompileClasspath,testRuntimeClasspath
+dev.langchain4j:langchain4j-core:1.16.3=compileClasspath,runtimeClasspath,testCompileClasspath,testRuntimeClasspath
+dev.langchain4j:langchain4j:1.16.3=testCompileClasspath,testRuntimeClasspath
 org.apache.opennlp:opennlp-tools:2.5.9=testCompileClasspath,testRuntimeClasspath
 org.apiguardian:apiguardian-api:1.1.2=testCompileClasspath
 org.jetbrains.kotlin:kotlin-build-tools-api:2.4.0=kotlinAbiValidationCompatClasspath,kotlinBuildToolsApiClasspath,kotlinCompilerClasspath,kotlinKlibCommonizerClasspath
diff --git a/gradle/verification-metadata.xml b/gradle/verification-metadata.xml
index f967005b..0c62c26c 100644
--- a/gradle/verification-metadata.xml
+++ b/gradle/verification-metadata.xml
@@ -322,6 +322,14 @@
             <sha256 value="e1f00ec89d676ccc1d46ac31bb89370e6b0c03e24b36d23ea860d062679cccc3" origin="Generated by Gradle"/>
          </artifact>
       </component>
+      <component group="dev.langchain4j" name="langchain4j" version="1.16.3">
+         <artifact name="langchain4j-1.16.3.jar">
+            <sha256 value="b847cf7269822dd9de46dc3ca01953e3ba29d5de7e20b1f0322f1d115f38df26" origin="Generated by Gradle"/>
+         </artifact>
+         <artifact name="langchain4j-1.16.3.pom">
+            <sha256 value="00ea4bcadefa440f2c158bf05ca4bd994174f874afee2fad0bd9ea2abcf63643" origin="Generated by Gradle"/>
+         </artifact>
+      </component>
       <component group="dev.langchain4j" name="langchain4j-core" version="1.16.2">
          <artifact name="langchain4j-core-1.16.2.jar">
             <sha256 value="624ab1cf9aa99ee18626e2229a5a9599bbecef28c9c99f0cd5c741a550d3b785" origin="Generated by Gradle"/>
@@ -330,6 +338,14 @@
             <sha256 value="f300bd3123be086acebc24845e1dde645d388e06cd586a5015d97bfe16690a5c" origin="Generated by Gradle"/>
          </artifact>
       </component>
+      <component group="dev.langchain4j" name="langchain4j-core" version="1.16.3">
+         <artifact name="langchain4j-core-1.16.3.jar">
+            <sha256 value="2eb3c5c0aa740136d8b87b11dfb5f3a2a0bd7a20da12a618cb5cabaf66162575" origin="Generated by Gradle"/>
+         </artifact>
+         <artifact name="langchain4j-core-1.16.3.pom">
+            <sha256 value="f92284b1e6415e78992f5167f085840b70038ea0d3739b365277417c8d9a062c" origin="Generated by Gradle"/>
+         </artifact>
+      </component>
       <component group="dev.zacsweers.kctfork" name="core" version="0.7.1">
          <artifact name="core-0.7.1.jar">
             <sha256 value="e19c26fddbb702461b7a95edea5601007b31981cd357f095d53e803eded77a27" origin="Generated by Gradle"/>