diff --git a/README.md b/README.md
index 4ca780a..a480a83 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,6 @@ You can write functions in any of the following runtimes and execute them straig
 - Python 3.11
 - Python 3.10
 - Python 3.9
-- Python 3.8
 - Java 21
 - Java 17
 - Java 11
diff --git a/docs/functions/customization.md b/docs/functions/customization.md
index 42cb6a9..d3a2058 100644
--- a/docs/functions/customization.md
+++ b/docs/functions/customization.md
@@ -13,7 +13,6 @@ Lambda supports multiple languages through the use of runtimes. You can choose a
 - Python 3.11: `python3.11`
 - Python 3.10: `python3.10`
 - Python 3.9: `python3.9`
-- Python 3.8: `python3.8`
 - Java 21: `java21`
 - Java 17: `java17`
 - Java 11: `java11`
diff --git a/src/Runtime.php b/src/Runtime.php
index 09a27a8..2095ef8 100644
--- a/src/Runtime.php
+++ b/src/Runtime.php
@@ -22,6 +22,7 @@ abstract class Runtime
 
     public const PYTHON_39 = 'python3.9';
 
+    /** @deprecated */
     public const PYTHON_38 = 'python3.8';
 
     /** @deprecated */