diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index a5c9044ef7f1..ef10e661927b 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -239,8 +239,8 @@ in
       "sha256-iWBFQhEfZEsk/iHFMz2q3FvZqY/DeOcgJLLMbcFtD7Q=";
 
   mypy-boto3-cloudsearch =
-    buildMypyBoto3Package "cloudsearch" "1.42.3"
-      "sha256-vinIbxGEPhGko4DnHDtNKBGm5EwYu7SpknV/QVdQr3Q=";
+    buildMypyBoto3Package "cloudsearch" "1.43.0"
+      "sha256-XWNJ5/MQnUSXTAA5Fa6MYxXj/ygw6tVjnTY+Nar8vU8=";
 
   mypy-boto3-cloudsearchdomain =
     buildMypyBoto3Package "cloudsearchdomain" "1.42.3"