diff --git a/readme.md b/readme.md
index a8e16a9..9eafa28 100644
--- a/readme.md
+++ b/readme.md
@@ -330,7 +330,6 @@ Content-Type: application/json
 `erlang`,
 `file`,
 `forte`,
-`forth`,
 `fortran`,
 `freebasic`,
 `fsharp.net`,
diff --git a/runtimes/default.nix b/runtimes/default.nix
index 61fa994..e8eb533 100644
--- a/runtimes/default.nix
+++ b/runtimes/default.nix
@@ -64,5 +64,4 @@ args: {
     "llvm_ir" = import ./llvm_ir.nix args;
     "mono-basic" = import ./mono-basic.nix args;
     "j" = import ./j.nix args;
-    "forth" = import ./forth.nix args;
 }
diff --git a/runtimes/forth.nix b/runtimes/forth.nix
deleted file mode 100644
index b9edfa9..0000000
--- a/runtimes/forth.nix
+++ /dev/null
@@ -1,30 +0,0 @@
-{pkgs, piston, ...}:
-let
-    pkg = pkgs.gforth;
-in piston.mkRuntime {
-    language = "forth";
-    version = pkg.version;
-    runtime = "forth";
-
-    aliases = [
-        "gforth"
-    ];
-
-    run = ''
-    ${pkg}/bin/gforth "$@"
-    '';
-
-    tests = [
-        (piston.mkTest {
-            files = {
-                "test.forth" = ''
-                .( OK) bye
-                '';
-            };
-            args = [];
-            stdin = "";
-            packages = [];
-            main = "test.forth";
-        })
-    ];
-}