diff --git a/.zwanzig.json b/.zwanzig.json
new file mode 100644
index 0000000..cd4f33c
--- /dev/null
+++ b/.zwanzig.json
@@ -0,0 +1,31 @@
+{
+  "resource_models": [
+    { "kind": "free_owned", "method_name": "deinit" },
+
+    { "kind": "alloc", "method_name": "SDL_CreateWindow" },
+    { "kind": "free", "method_name": "SDL_DestroyWindow" },
+
+    { "kind": "alloc", "method_name": "SDL_CreateRenderer" },
+    { "kind": "free", "method_name": "SDL_DestroyRenderer" },
+
+    { "kind": "alloc", "method_name": "SDL_CreateTexture" },
+    { "kind": "alloc", "method_name": "SDL_CreateTextureFromSurface" },
+    { "kind": "free", "method_name": "SDL_DestroyTexture" },
+
+    { "kind": "alloc", "method_name": "SDL_CreateSurface" },
+    { "kind": "free", "method_name": "SDL_DestroySurface" },
+
+    { "kind": "alloc", "method_name": "SDL_CreateSystemCursor" },
+    { "kind": "free", "method_name": "SDL_DestroyCursor" },
+
+    { "kind": "alloc", "method_name": "SDL_IOFromConstMem" },
+    { "kind": "free", "method_name": "SDL_CloseIO" },
+
+    { "kind": "open", "method_name": "TTF_OpenFont" },
+    { "kind": "open", "method_name": "TTF_OpenFontIO" },
+    { "kind": "close", "method_name": "TTF_CloseFont" },
+
+    { "kind": "alloc", "method_name": "CFRetain" },
+    { "kind": "free", "method_name": "CFRelease" }
+  ]
+}
diff --git a/build.zig.zon b/build.zig.zon
index 920711c..fe820ec 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -17,8 +17,8 @@
             .hash = "toml-0.3.0-bV14Bd-EAQBKoXhpYft303BtA2vgLNlxntUCIWgRUl46",
         },
         .zwanzig = .{
-            .url = "https://github.com/forketyfork/zwanzig/archive/refs/tags/v0.6.0.tar.gz",
-            .hash = "zwanzig-0.6.0-oiXZlq5LFADerMou9MKY7lYwwzF53DSdeMowW7CO8vKk",
+            .url = "https://github.com/forketyfork/zwanzig/archive/refs/tags/v0.8.0.tar.gz",
+            .hash = "zwanzig-0.8.0-oiXZlms3FQDGrGJGFGOO-bMF7OkxG4nFhiK6-ajHsJTb",
         },
     },
     .paths = .{
diff --git a/src/app/terminal_actions.zig b/src/app/terminal_actions.zig
index 421b4a6..40e2e06 100644
--- a/src/app/terminal_actions.zig
+++ b/src/app/terminal_actions.zig
@@ -71,11 +71,12 @@ pub fn copySelectionToClipboard(
     const text = try screen.selectionString(allocator, .{ .sel = sel, .trim = true });
     defer allocator.free(text);
 
-    const clipboard_text = try allocator.allocSentinel(u8, text.len, 0);
-    defer allocator.free(clipboard_text);
-    @memcpy(clipboard_text[0..text.len], text);
+    const clipboard_buf = try allocator.alloc(u8, text.len + 1);
+    defer allocator.free(clipboard_buf);
+    @memcpy(clipboard_buf[0..text.len], text);
+    clipboard_buf[text.len] = 0;
 
-    if (!c.SDL_SetClipboardText(clipboard_text.ptr)) {
+    if (!c.SDL_SetClipboardText(clipboard_buf.ptr)) {
         ui.showToast("Failed to copy selection", now);
         return;
     }