diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index 16de871293dd..bbbe0a41925b 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -970,8 +970,8 @@ rec {
       "sha256-F3NyoF6+p+icDI14Ieb1Kv4lvL0Qlyxu4svExfcaRSU=";
 
   mypy-boto3-opensearch =
-    buildMypyBoto3Package "opensearch" "1.39.0"
-      "sha256-p5/RFmChiQPK4E5fXChIQrbqPG5mNAKK3CCpiYMzMEQ=";
+    buildMypyBoto3Package "opensearch" "1.39.5"
+      "sha256-GVl2DEuM5xkd0Jm1zJW6tYr6990GnYjlZ5xi2roPUss=";
 
   mypy-boto3-opensearchserverless =
     buildMypyBoto3Package "opensearchserverless" "1.39.0"