diff --git a/.github/workflows/lspec.yml b/.github/workflows/lspec.yml
index 0b06c6e..b04e4b7 100644
--- a/.github/workflows/lspec.yml
+++ b/.github/workflows/lspec.yml
@@ -1,21 +1,16 @@
 name: "LSpec CI"
+
 on:
   pull_request:
   push:
     branches:
       - master
+  workflow_dispatch:
+
 jobs:
   build:
-    name: Build
+    name: Tests
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: cachix/install-nix-action@v22
-        with:
-          nix_path: nixpkgs=channel:nixos-24.11
-      - name: Install Lean
-        run: nix-shell
-      - name: Log versions
-        run: nix-shell --run "lean --version && lake --version"
-      - name: run LSpec binary
-        run: nix-shell --run "lake exe lspec"
+      - uses: actions/checkout@v5
+      - uses: leanprover/lean-action@v1
diff --git a/native/sqliteffi.c b/native/sqliteffi.c
index 8c16804..1214134 100644
--- a/native/sqliteffi.c
+++ b/native/sqliteffi.c
@@ -1,6 +1,5 @@
 #include <lean/lean.h>
 #include <sqlite3.h>
-#include <stdio.h>
 
 lean_external_class* g_sqlite_connection_external_class = NULL;
 lean_external_class* g_sqlite_cursor_external_class = NULL;
@@ -26,16 +25,12 @@ sqlite3_stmt* unbox_cursor(lean_object* o) {
 void connection_finalize(void* conn) {
   if (!conn) return;
 
-  printf("connection_finalize: %x\n", conn);
-
   sqlite3_close(conn);
 }
 
 void cursor_finalize(void* cursor) {
   if (!cursor) return;
 
-  printf("cursor_finalize: %x\n", cursor);
-
   sqlite3_finalize(cursor);
 }
 
@@ -49,8 +44,6 @@ lean_obj_res lean_sqlite_open(b_lean_obj_arg path, uint32_t flags) {
   const char* path_str = lean_string_cstr(path);
   sqlite3* conn = malloc(sizeof(sqlite3*));
 
-  printf("initialize_connection: %x\n", conn);
-
   int32_t c = sqlite3_open_v2(path_str, &conn, flags, NULL);
 
   if (c == SQLITE_OK)
@@ -69,8 +62,6 @@ lean_obj_res lean_sqlite_prepare(b_lean_obj_arg conn_box, b_lean_obj_arg query_s
 
   sqlite3_stmt* cursor = malloc(sizeof(sqlite3_stmt*));
 
-  printf("initialize_cursor: %x\n", cursor);
-
   int32_t c = sqlite3_prepare_v2(conn, query, -1, &cursor, NULL);
 
   if (c != SQLITE_OK) {