diff --git a/pkgs/development/python-modules/arelle/default.nix b/pkgs/development/python-modules/arelle/default.nix
index 8be34e9c8af6..ec4f7521fe4b 100644
--- a/pkgs/development/python-modules/arelle/default.nix
+++ b/pkgs/development/python-modules/arelle/default.nix
@@ -52,14 +52,14 @@
 
 buildPythonPackage (finalAttrs: {
   pname = "arelle${lib.optionalString (!gui) "-headless"}";
-  version = "2.38.4";
+  version = "2.38.7";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "Arelle";
     repo = "Arelle";
     tag = finalAttrs.version;
-    hash = "sha256-ngFhY6yngr2OVQ6gsdpk5UAhzIpIrwiw+S+HK3oqfec=";
+    hash = "sha256-9ARMEXqoiBuAnj8hRrA1PqArmTMmRMP1BwASekOTQoc=";
   };
 
   outputs = [