diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index b256c416a7bb..eea9dbe1a869 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -475,8 +475,8 @@ in
       "sha256-duU3LIeW3FNiplVmduZsNXBoDK7vbO6ecrBt1Y7C9rU=";
 
   mypy-boto3-elasticache =
-    buildMypyBoto3Package "elasticache" "1.43.0"
-      "sha256-6NjmoXMu9RDobyrdRWYVNPc6Q8JDLP+TzAsy2z+ELgk=";
+    buildMypyBoto3Package "elasticache" "1.43.20"
+      "sha256-wXJzvzlQXgqrJfI/IV/KVmIQ5etRFuld69+mvgsK0Og=";
 
   mypy-boto3-elasticbeanstalk =
     buildMypyBoto3Package "elasticbeanstalk" "1.43.0"