diff --git a/pkgs/servers/teleport/15/default.nix b/pkgs/servers/teleport/15/default.nix
index 23ac2d2024d7..12cedd539696 100644
--- a/pkgs/servers/teleport/15/default.nix
+++ b/pkgs/servers/teleport/15/default.nix
@@ -1,9 +1,9 @@
 { wasm-bindgen-cli, ... }@args:
 import ../generic.nix (args // {
-  version = "15.4.11";
-  hash = "sha256-vmJ76aRAsbSGXZ2HcuryOlUYrUOPMP6MaI8OjxxyiZ4=";
-  vendorHash = "sha256-oJo8Ga6TAUz1xSYiRckzq8zZvgIZFCeEwZbiyyVOdkI=";
-  yarnHash = "sha256-5ppgBa5CyQ49FSFhdWDbTcCTdt0vsXAzNTeyG4r7crg=";
+  version = "15.4.21";
+  hash = "sha256-n5dAJ5ilq5nHo3neQzCUFnDRwLhArwleMSho4/g0MT4=";
+  vendorHash = "sha256-bW8ztNeSzxUNtbuBtxIya9TeGfktC+/fz9iXB0GL0Mg=";
+  yarnHash = "sha256-ZaLLrcwAeq6TQ1SaA2few4s0HqktOZEpxCTcNGloGfk=";
   cargoLock = {
     lockFile = ./Cargo.lock;
     outputHashes = {
diff --git a/pkgs/servers/teleport/generic.nix b/pkgs/servers/teleport/generic.nix
index abeed3b24435..ed2ce5d8a7d1 100644
--- a/pkgs/servers/teleport/generic.nix
+++ b/pkgs/servers/teleport/generic.nix
@@ -150,7 +150,7 @@ buildGoModule rec {
   patches = extPatches ++ [
     ./0001-fix-add-nix-path-to-exec-env.patch
     ./rdpclient.patch
-    (if lib.versionAtLeast version "16" then ./tsh_16.patch else ./tsh.patch)
+    ./tsh.patch
   ];
 
   # Reduce closure size for client machines
diff --git a/pkgs/servers/teleport/tsh.patch b/pkgs/servers/teleport/tsh.patch
index 6344a3915717..f510b21d5dec 100644
--- a/pkgs/servers/teleport/tsh.patch
+++ b/pkgs/servers/teleport/tsh.patch
@@ -11,7 +11,7 @@ index 5de21c69d0..3995c19e3c 100644
  	if err != nil {
  		return trace.Wrap(err)
  	}
-+	cf.executablePath = path.Dir(tempBinaryPath) + "/tsh"
++	cf.executablePath = filepath.Dir(tempBinaryPath) + "/tsh"
  
  	// configs
  	setEnvFlags(&cf)
diff --git a/pkgs/servers/teleport/tsh_16.patch b/pkgs/servers/teleport/tsh_16.patch
deleted file mode 100644
index f510b21d5dec..000000000000
--- a/pkgs/servers/teleport/tsh_16.patch
+++ /dev/null
@@ -1,17 +0,0 @@
-diff --git a/tool/tsh/common/tsh.go b/tool/tsh/common/tsh.go
-index 5de21c69d0..3995c19e3c 100644
---- a/tool/tsh/common/tsh.go
-+++ b/tool/tsh/common/tsh.go
-@@ -1084,10 +1084,11 @@ func Run(ctx context.Context, args []string, opts ...CliOption) error {
- 
- 	var err error
- 
--	cf.executablePath, err = os.Executable()
-+	tempBinaryPath, err := os.Executable()
- 	if err != nil {
- 		return trace.Wrap(err)
- 	}
-+	cf.executablePath = filepath.Dir(tempBinaryPath) + "/tsh"
- 
- 	// configs
- 	setEnvFlags(&cf)