diff --git a/documentation/source/index.rst b/documentation/source/index.rst
index b53d324..bd3dcd8 100644
--- a/documentation/source/index.rst
+++ b/documentation/source/index.rst
@@ -60,16 +60,15 @@ Usage
 
 The LSP server needs to be able to open a project (that is, a Dylan library)
 associated with the file you're editing when you turn on LSP in your editor. It
-assumes you are using a `dylan-tool
-<https://github.com/dylan-lang/dylan-tool>`_ workspace and searches for a
-project to open as follows:
+assumes you are using a `deft <https://github.com/dylan-lang/deft>`_ workspace
+and searches for a project to open as follows:
 
 1. If there is a :file:`workspace.json` file and that file has a
    `"default-library"` property, the specified library is opened.
 
-2. It uses the :program:`dylan` tool to choose a library defined in the
-   workspace. This is `generally
-   <https://github.com/dylan-lang/dylan-tool/blob/292b7bf761745c9fa810511c9888f802dd787011/sources/workspaces/workspaces.dylan#L151>`_
+2. It uses :program:`deft` to choose a library defined in the workspace. This
+   is `generally
+   <https://github.com/dylan-lang/deft/blob/86583a27d1b63d1480a8c57e46d0dd249d131515/sources/workspaces/workspaces.dylan#L145>`_
    the test suite library, if one exists; otherwise it chooses a project
    arbitrarily.
 
@@ -80,7 +79,7 @@ which must be on your :envvar:`PATH`.
 When you open each new file in your editor the LSP client may try to start a
 new project if the file isn't part of the same :program:`dylan` workspace
 directory. If you want the client to use just one project, use a `multi-package
-workspace <https://opendylan.org/package/dylan-tool/index.html#workspaces>`_.
+workspace <https://opendylan.org/package/deft/index.html#workspaces>`_.
 
 .. note:: Always run ``dylan update`` and ``dylan build -a`` in your workspace
           **before** starting the LSP server, or :program:`dylan-lsp-server`
diff --git a/sources/handlers.dylan b/sources/handlers.dylan
index 3de92ef..b8a166a 100644
--- a/sources/handlers.dylan
+++ b/sources/handlers.dylan
@@ -609,11 +609,11 @@ define function find-project-name
     let library-name
       = workspace & ws/workspace-default-library-name(workspace);
     if (library-name)
-      log-debug("Found dylan-tool workspace default library name %=", library-name);
+      log-debug("Found deft workspace default library name %=", library-name);
       library-name
     else
       error("Dylan workspace has no default library; no .lid files created yet?"
-              " See https://opendylan.org/package/dylan-tool/index.html#workspaces"
+              " See https://opendylan.org/package/deft/index.html#workspaces"
               " for how to configure a default project.");
     end
   end if
diff --git a/sources/library.dylan b/sources/library.dylan
index 438f65e..ed01759 100644
--- a/sources/library.dylan
+++ b/sources/library.dylan
@@ -8,7 +8,7 @@ define library lsp-dylan
   use dfmc-back-end-implementations;
   use dfmc-reader;
   use dylan;
-  use dylan-tool;
+  use deft;
   use environment-commands;
   use environment-internal-commands;
   use environment-protocols;
diff --git a/sources/misc.dylan b/sources/misc.dylan
index 5bfbfd3..6b709f2 100644
--- a/sources/misc.dylan
+++ b/sources/misc.dylan
@@ -50,10 +50,10 @@ define function invoke-message-handler
 end function;
 
 // Find the workspace root. The "rootUri" LSP parameter takes precedence over
-// the deprecated "rootPath" LSP parameter. We first look for a `dylan-tool`
+// the deprecated "rootPath" LSP parameter. We first look for a `deft`
 // workspace root containing the file and then fall back to the nearest
 // directory containing a `registry` directory. This should work for
-// `dylan-tool` users and others equally well.
+// `deft` users and others equally well.
 define function find-workspace-root
     (root-uri, root-path) => (root :: false-or(<directory-locator>))
   let directory