diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 634deb8..89b59e7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, macos-latest, windows-latest]
     steps:
       - uses: actions/checkout@v4
       - uses: ocaml/setup-ocaml@v3
diff --git a/bin/httui-lsp/schema_store.ml b/bin/httui-lsp/schema_store.ml
index 86870f8..0526739 100644
--- a/bin/httui-lsp/schema_store.ml
+++ b/bin/httui-lsp/schema_store.ml
@@ -28,6 +28,9 @@ let rec shape_of_json : Yojson.Safe.t -> Httui_lang.Shape.t = function
    absolute path ends in "/" + the stored relative path. The filter runs
    client-side: the table holds one small row per executed alias. *)
 let row_matches ~file_path stored =
+  (* document URIs yield backslash paths on Windows *)
+  let normalize p = String.map (fun c -> if c = '\\' then '/' else c) p in
+  let file_path = normalize file_path and stored = normalize stored in
   stored = file_path || String.ends_with ~suffix:("/" ^ stored) file_path
 
 (** [(alias, shape)] pairs inferred for the document at absolute path
diff --git a/test/test_lsp.ml b/test/test_lsp.ml
index fb09060..29fda29 100644
--- a/test/test_lsp.ml
+++ b/test/test_lsp.ml
@@ -534,6 +534,7 @@ let () =
   send_to c3 (req 9 "shutdown");
   let _ = recv_from c3 in
   send_to c3 (notif "exit");
-  Sys.remove db_path;
+  (* best effort: on Windows the server may still hold the file *)
+  (try Sys.remove db_path with Sys_error _ -> ());
 
   if !failures > 0 then exit 1