diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index 7a0422b7e86c..bf781873260c 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -507,8 +507,8 @@ in
       "sha256-2Ly3Ty1hw3U5NTRf1KCIw4Q/1WSD7pFEBafr1JiYLPA=";
 
   mypy-boto3-entityresolution =
-    buildMypyBoto3Package "entityresolution" "1.42.10"
-      "sha256-DyAxO4HPA98ON9Q2Sp5HF1lQNp8yecGiEaV12m0E7zM=";
+    buildMypyBoto3Package "entityresolution" "1.43.0"
+      "sha256-OW2ITDZlMSCnCMlfCl3lBMTMXRhahVaSIoOX70hX6U0=";
 
   mypy-boto3-es =
     buildMypyBoto3Package "es" "1.42.81"