diff --git a/pkgs/tools/backup/tsm-client/default.nix b/pkgs/tools/backup/tsm-client/default.nix
index 44a8be1f10a8..bc5f0586c6ed 100644
--- a/pkgs/tools/backup/tsm-client/default.nix
+++ b/pkgs/tools/backup/tsm-client/default.nix
@@ -45,7 +45,7 @@
 # point to this derivations `/dsmi_dir` directory symlink.
 # Other environment variables might be necessary,
 # depending on local configuration or usage; see:
-# https://www.ibm.com/docs/en/spectrum-protect/8.1.13?topic=solaris-set-api-environment-variables
+# https://www.ibm.com/docs/en/spectrum-protect/8.1.15?topic=solaris-set-api-environment-variables
 
 
 # The newest version of TSM client should be discoverable by
@@ -62,7 +62,7 @@
 # Follow the "HTTPS" link of the row with the latest date stamp.
 # In the directory listing to show up, pick the big `.tar` file.
 #
-# (as of 2021-12-18)
+# (as of 2022-08-13)
 
 
 let
@@ -107,10 +107,10 @@ let
 
   unwrapped = stdenv.mkDerivation rec {
     name = "tsm-client-${version}-unwrapped";
-    version = "8.1.15.0";
+    version = "8.1.15.1";
     src = fetchurl {
       url = mkSrcUrl version;
-      hash = "sha512-K98irjGvN2QejwbOoRhnHkYdFX3ZQ8hv+v2Gb2/pnr9AE1uj6h0lEXQu2cOEHbk7jMtGwpglzofCF7yUyT/tcw==";
+      hash = "sha512-DURIMlWlmu+l2UT3bAMaFPlwO+UlrfgaYCsm/JonvvC0K0WallhNKFd7sp0amPkU+4QHE2fkFrTGE3/lY+fghQ==";
     };
     inherit meta passthru;