diff --git a/pkgs/tools/security/ghidra/extensions.nix b/pkgs/tools/security/ghidra/extensions.nix
index cce48635f23b..e282b9b16f93 100644
--- a/pkgs/tools/security/ghidra/extensions.nix
+++ b/pkgs/tools/security/ghidra/extensions.nix
@@ -6,4 +6,7 @@ lib.makeScope newScope (self: {
   ghidraninja-ghidra-scripts = self.callPackage ./extensions/ghidraninja-ghidra-scripts { };
 
   gnudisassembler = self.callPackage ./extensions/gnudisassembler { inherit ghidra; };
+
+  sleighdevtools = self.callPackage ./extensions/sleighdevtools { inherit ghidra; };
+
 })
diff --git a/pkgs/tools/security/ghidra/extensions/sleighdevtools/default.nix b/pkgs/tools/security/ghidra/extensions/sleighdevtools/default.nix
new file mode 100644
index 000000000000..d8fd0182ab9d
--- /dev/null
+++ b/pkgs/tools/security/ghidra/extensions/sleighdevtools/default.nix
@@ -0,0 +1,40 @@
+{ lib
+, buildGhidraExtension
+, ghidra
+, python3
+}:
+
+buildGhidraExtension {
+  pname = "sleighdevtools";
+  version = lib.getVersion ghidra;
+
+  src = "${ghidra}/lib/ghidra/Extensions/Ghidra/${ghidra.distroPrefix}_SleighDevTools.zip";
+  dontUnpack = true;
+
+  # Built as part ghidra
+  dontBuild = true;
+  buildInputs = [ python3 ];
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/lib/ghidra/Ghidra/Extensions
+    unzip -d $out/lib/ghidra/Ghidra/Extensions $src
+
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    inherit (ghidra.meta) homepage license;
+    description = "Sleigh language development tools including external disassembler capabilities";
+    longDescription = ''
+      Sleigh language development tools including external disassembler capabilities.
+      The GnuDisassembler extension may be also be required as a disassembly provider.
+    '';
+    downloadPage = "https://github.com/NationalSecurityAgency/ghidra/tree/master/Ghidra/Extensions/SleighDevTools";
+    sourceProvenance = with sourceTypes; [
+      fromSource
+      binaryBytecode  # deps
+    ];
+  };
+}