diff --git a/pkgs/tools/admin/awsume/default.nix b/pkgs/tools/admin/awsume/default.nix
index ff83b6b6cf28..42de084b7cdb 100644
--- a/pkgs/tools/admin/awsume/default.nix
+++ b/pkgs/tools/admin/awsume/default.nix
@@ -12,13 +12,13 @@
 
 buildPythonApplication rec {
   pname = "awsume";
-  version = "4.5.3";
+  version = "4.5.5";
 
   src = fetchFromGitHub {
     owner = "trek10inc";
     repo = "awsume";
     rev = version;
-    sha256 = "sha256-An7omHk2Yxjc6db6Y8QSrtgUvSF5rlVhgxMTpNOePHo=";
+    sha256 = "sha256-lm9YANYckyHDoNbB1wytBm55iyBmUuxFPmZupfpReqc=";
   };
 
   AWSUME_SKIP_ALIAS_SETUP = 1;
@@ -35,7 +35,7 @@ buildPythonApplication rec {
 
   postPatch = ''
     patchShebangs shell_scripts
-    substituteInPlace shell_scripts/{awsume,awsume.fish} --replace "awsumepy" "$out/bin/awsumepy"
+    substituteInPlace shell_scripts/{awsume,awsume.fish} --replace-fail "awsumepy" "$out/bin/awsumepy"
   '';
 
   postInstall = ''