diff --git a/Cargo.lock b/Cargo.lock
index 3ae309cd..f83df8bd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -393,12 +393,6 @@ dependencies = [
  "termcolor",
 ]
 
-[[package]]
-name = "equivalent"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
-
 [[package]]
 name = "errno"
 version = "0.3.1"
@@ -590,7 +584,7 @@ dependencies = [
  "futures-sink",
  "futures-util",
  "http",
- "indexmap 1.9.3",
+ "indexmap",
  "slab",
  "tokio",
  "tokio-util",
@@ -617,12 +611,6 @@ version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
 
-[[package]]
-name = "hashbrown"
-version = "0.14.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2c6201b9ff9fd90a5a3bac2e56a830d0caa509576f0e503818ee82c181b3437a"
-
 [[package]]
 name = "headers"
 version = "0.3.8"
@@ -789,17 +777,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bd070e393353796e801d209ad339e89596eb4c8d430d18ede6a1cced8fafbd99"
 dependencies = [
  "autocfg",
- "hashbrown 0.12.3",
-]
-
-[[package]]
-name = "indexmap"
-version = "2.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d5477fe2230a79769d8dc68e0eabf5437907c0457a5614a9e8dddb67f65eb65d"
-dependencies = [
- "equivalent",
- "hashbrown 0.14.0",
+ "hashbrown",
 ]
 
 [[package]]
@@ -1569,15 +1547,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "serde_spanned"
-version = "0.6.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "96426c9936fd7a0124915f9185ea1d20aa9445cc9821142f0a73bc9207a2e186"
-dependencies = [
- "serde",
-]
-
 [[package]]
 name = "serde_urlencoded"
 version = "0.7.1"
@@ -1866,36 +1835,11 @@ dependencies = [
 
 [[package]]
 name = "toml"
-version = "0.7.6"
+version = "0.5.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c17e963a819c331dcacd7ab957d80bc2b9a9c1e71c804826d2f283dd65306542"
+checksum = "f4f7f0dd8d50a853a531c426359045b1998f04219d88799810762cd4ad314234"
 dependencies = [
  "serde",
- "serde_spanned",
- "toml_datetime",
- "toml_edit",
-]
-
-[[package]]
-name = "toml_datetime"
-version = "0.6.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7cda73e2f1397b1262d6dfdcef8aafae14d1de7748d66822d3bfeeb6d03e5e4b"
-dependencies = [
- "serde",
-]
-
-[[package]]
-name = "toml_edit"
-version = "0.19.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f8123f27e969974a3dfba720fdb560be359f57b44302d280ba72e76a74480e8a"
-dependencies = [
- "indexmap 2.0.0",
- "serde",
- "serde_spanned",
- "toml_datetime",
- "winnow",
 ]
 
 [[package]]
@@ -2317,15 +2261,6 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1a515f5799fe4961cb532f983ce2b23082366b898e52ffbce459c86f67c8378a"
 
-[[package]]
-name = "winnow"
-version = "0.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "81fac9742fd1ad1bd9643b991319f72dd031016d44b77039a26977eb667141e7"
-dependencies = [
- "memchr",
-]
-
 [[package]]
 name = "xml5ever"
 version = "0.17.0"
diff --git a/Cargo.toml b/Cargo.toml
index 74886150..bb622de8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -33,7 +33,7 @@ serde = { version = "1.0.163", features = ["derive"] }
 serde_json = "1.0.96"
 shlex = "1.1.0"
 tempfile = "3.4.0"
-toml = "0.7.6"
+toml = "0.5.11" # Do not update, see https://github.com/rust-lang/mdBook/issues/2037
 topological-sort = "0.2.2"
 
 # Watch feature
diff --git a/src/book/init.rs b/src/book/init.rs
index 1e3a0036..faca1d09 100644
--- a/src/book/init.rs
+++ b/src/book/init.rs
@@ -99,11 +99,12 @@ impl BookBuilder {
     fn write_book_toml(&self) -> Result<()> {
         debug!("Writing book.toml");
         let book_toml = self.root.join("book.toml");
-        let cfg =
-            toml::to_string(&self.config).with_context(|| "Unable to serialize the config")?;
+        let cfg = toml::to_vec(&self.config).with_context(|| "Unable to serialize the config")?;
 
-        fs::write(&book_toml, cfg)
-            .with_context(|| format!("failed to write {}", book_toml.display()))?;
+        File::create(book_toml)
+            .with_context(|| "Couldn't create book.toml")?
+            .write_all(&cfg)
+            .with_context(|| "Unable to write config to book.toml")?;
         Ok(())
     }