diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index 8d179709eb85..5ddeee091032 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -966,8 +966,8 @@ in
       "sha256-o2X4h4K/Cf/TnZG3P5uDjdVmYJRcwPlv6DnSwdzOgc0=";
 
   mypy-boto3-opensearch =
-    buildMypyBoto3Package "opensearch" "1.42.13"
-      "sha256-NVhi7X3TpxHLoalx2LTleKBXUiWElWdr4NGdOlnuoXk=";
+    buildMypyBoto3Package "opensearch" "1.42.56"
+      "sha256-yGLOtl1C0Y4F/Q1yDUEx0nR5VcqFFpdt80Eix/DZ5ts=";
 
   mypy-boto3-opensearchserverless =
     buildMypyBoto3Package "opensearchserverless" "1.42.29"