diff --git a/Cargo.lock b/Cargo.lock
index 5a210a4..3dd4841 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -175,6 +175,15 @@ version = "0.4.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "501266b7edd0174f8530248f87f99c88fbe60ca4ef3dd486835b8d8d53136f7f"
 
+[[package]]
+name = "kstring"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b310ccceade8121d7d77fee406160e457c2f4e7c7982d589da3499bc7ea4526"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "lexical-core"
 version = "0.4.8"
@@ -409,14 +418,14 @@ dependencies = [
 
 [[package]]
 name = "toml_edit"
-version = "0.3.1"
+version = "0.12.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d30834716e93eef7db510648299f647427858e7e2c0beeec2699ea2289c7739"
+checksum = "94217a6d6a89fb646cbc9f28283cf4745f77eb0b04c4f680c4b3ae4450e3a473"
 dependencies = [
  "combine",
  "indexmap",
  "itertools",
- "vec1",
+ "kstring",
 ]
 
 [[package]]
@@ -443,12 +452,6 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
 
-[[package]]
-name = "vec1"
-version = "1.10.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2bda7c41ca331fe9a1c278a9e7ee055f4be7f5eb1c2b72f079b4ff8b5fce9d5c"
-
 [[package]]
 name = "vec_map"
 version = "0.8.1"
diff --git a/Cargo.toml b/Cargo.toml
index 774036b..1e36ed8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,4 +23,4 @@ nom = "5"
 serde = "1.0"
 serde_json = "1.0"
 structopt = "0.3"
-toml_edit = "0.3"
+toml_edit = "0.12.6"
diff --git a/src/main.rs b/src/main.rs
index 1c2f318..84a0285 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -78,7 +78,7 @@ fn get(path: PathBuf, query: &str, opts: GetOpts) -> Result<(), Error> {
     if opts.output_toml {
         print_toml_fragment(&doc, &tpath);
     } else {
-        let item = walk_tpath(&doc.root, &tpath);
+        let item = walk_tpath(doc.as_item(), &tpath);
         // TODO: support shell-friendly output like `jq -r`
         println!("{}", serde_json::to_string(&JsonItem(item))?);
     }
@@ -88,7 +88,7 @@ fn get(path: PathBuf, query: &str, opts: GetOpts) -> Result<(), Error> {
 fn print_toml_fragment(doc: &Document, tpath: &[TpathSegment]) -> () {
     use TpathSegment::{Name, Num};
 
-    let mut item = &doc.root;
+    let mut item = doc.as_item();
     let mut breadcrumbs = vec![];
     for seg in tpath {
         breadcrumbs.push((item, seg));
@@ -125,8 +125,7 @@ fn print_toml_fragment(doc: &Document, tpath: &[TpathSegment]) -> () {
             _ => panic!("UNIMPLEMENTED: --output-toml inside inline data"), // TODO
         }
     }
-    let mut doc = Document::new();
-    doc.root = item;
+    let doc = Document::from(item.into_table().unwrap());
     print!("{}", doc.to_string());
 }
 
@@ -134,7 +133,7 @@ fn set(path: PathBuf, query: &str, value_str: &str) -> Result<(), Error> {
     let tpath = parse_query_cli(query)?.0;
     let mut doc = read_parse(path)?;
 
-    let mut item = &mut doc.root;
+    let mut item = doc.as_item_mut();
     let mut already_inline = false;
     let mut tpath = &tpath[..];
     use TpathSegment::{Name, Num};