diff --git a/README.md b/README.md
index 8cbb2ae..ede1585 100644
--- a/README.md
+++ b/README.md
@@ -85,7 +85,7 @@ The main search screen remains usable as long as at least one indexed dictionary
 
 ## Tech Stack
 
-- Kotlin 2.4.20
+- Kotlin 2.4.21
 - Jetpack Compose (BOM 2026.09.00)
 - Material 3
 - Coroutines and Flow 1.11.0
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index d8003f8..4e36310 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -6,7 +6,7 @@ compose_bom = "2026.09.00"
 core = "1.19.1"
 datastore_preferences = "1.2.1"
 documentfile = "1.1.0"
-kotlin = "2.4.20"
+kotlin = "2.4.21"
 lifecycle_runtime_ktx = "2.11.0"
 okhttp = "5.5.0"
 paging = "3.5.1"