diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index cd60c65de5ce..b235ddac2aa7 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" "1.42.64"
-      "sha256-NqLGG7NiCqYkkE5N0o2zfgmXFvo5Vk8dALD8Ra84htc=";
+    buildMypyBoto3Package "opensearch" "1.42.73"
+      "sha256-aRXlQy744sPCF4lUZTLaUXIzHtFUJEB9r6xaYQC6Ric=";
 
   mypy-boto3-opensearchserverless =
     buildMypyBoto3Package "opensearchserverless" "1.42.29"