diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e6a61ab..c4e0e34 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -1,16 +1,16 @@
 name: Rust
 on:
   push:
-    branches: [master, main, diesel-2]
+    branches: [main, diesel-2]
   pull_request:
-    branches: [master, main, diesel-2]
+    branches: [main, diesel-2]
 env:
   CARGO_TERM_COLOR: always
 jobs:
   test:
     strategy:
       matrix:
-        rust_version: [1.52.1, stable, beta]
+        rust_version: [1.56.0, stable, beta]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 103384d..9de5410 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,20 @@
+# Unreleased
+
+# 1.0.2
+
+* Update syn to 2.0, bump MSRV to 1.56
+
+# 1.0.1
+
+* Update syn/quote/proc-macro2 dependencies to 1.x
+
+# 1.0.0
+
+* Remove non-dev dependency on `diesel` -- `diesel-derive-newtype` generates generic diesel code.
+  If a future release of Diesel breaks compatibility with `diesel-derive-newtype` an explicit
+  dependency on the correct version span will be added and a new release will be made.
+* CI improvements.
+
 # 0.1.1
 
 Bugs Fixed:
diff --git a/Cargo.toml b/Cargo.toml
index a04766c..a500680 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,11 +9,16 @@ keywords = ["newtype", "derive"]
 license = "Apache-2.0/MIT"
 readme = "README.md"
 repository = "https://github.com/quodlibetor/diesel-derive-newtype"
+# Inherited MSRV of `syn`.
+rust-version = "1.56"
 
 [dependencies]
-proc-macro2 = "0.4"
-quote = "0.6"
-syn = "0.14"
+proc-macro2 = "1.0.51"
+syn = "2.0.10"
+quote = "1.0.23"
+
+[badges]
+maintenance = { status = "passively-maintained" }
 
 [dev-dependencies]
 diesel = {version = "2.0.0-rc.0", features = ["sqlite"]}
diff --git a/README.md b/README.md
index d7ce6d4..7bf16da 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,27 @@ Easy-peasy support of newtypes inside of Diesel.
 
 [![Rust](https://github.com/quodlibetor/diesel-derive-newtype/actions/workflows/test.yml/badge.svg?branch=diesel-2)](https://github.com/quodlibetor/diesel-derive-newtype/actions/workflows/test.yml) [![Crates.io Version](https://img.shields.io/crates/v/diesel-derive-newtype.svg)](https://crates.io/crates/diesel-derive-newtype)
 
+## Installation
+
+diesel-derive-newtype supports Diesel according to its major version -- 0.x
+through 1.x support the corresponding diesel versions, 2.x supports diesel 2.x.
+
+So for Diesel 1.x:
+
+```toml
+[dependencies]
+diesel-derive-newtype = "1.0"
+```
+
+And for Diesel 2.x:
+
+```toml
+[dependencies]
+diesel-derive-newtype = "2.0.0-rc.0"
+```
+
+Note: this crate requires Rust 1.56 due to the dependency on syn 2.x.
+
 ## `#[derive(DieselNewType)]`
 
 This crate exposes a single custom-derive macro `DieselNewType` which
diff --git a/README.tpl b/README.tpl
index 9fe2287..108a7c8 100644
--- a/README.tpl
+++ b/README.tpl
@@ -4,18 +4,27 @@ Easy-peasy support of newtypes inside of Diesel.
 
 [![Rust](https://github.com/quodlibetor/diesel-derive-newtype/actions/workflows/test.yml/badge.svg?branch=diesel-2)](https://github.com/quodlibetor/diesel-derive-newtype/actions/workflows/test.yml) [![Crates.io Version](https://img.shields.io/crates/v/diesel-derive-newtype.svg)](https://crates.io/crates/diesel-derive-newtype)
 
-{{readme}}
-
 ## Installation
 
 diesel-derive-newtype supports Diesel according to its major version -- 0.x
 through 1.x support the corresponding diesel versions, 2.x supports diesel 2.x.
 
+So for Diesel 1.x:
+
+```toml
+[dependencies]
+diesel-derive-newtype = "1.0"
+```
+
+And for Diesel 2.x:
+
 ```toml
 [dependencies]
-diesel-derive-newtype = "2.0"
+diesel-derive-newtype = "2.0.0-rc.0"
 ```
 
+{{readme}}
+
 ## License
 
 diesel-derive-newtype is licensed under either of