diff --git a/.github/workflows/rust.yaml b/.github/workflows/rust.yaml
index d80ba45..7407ecb 100644
--- a/.github/workflows/rust.yaml
+++ b/.github/workflows/rust.yaml
@@ -70,7 +70,7 @@ jobs:
         run: ./maintainer-tools/ci/run_task.sh nightly
 
   MSRV:                         # 2 jobs, one per lock file.
-    name: Test - 1.56.1 toolchain
+    name: Test - 1.63.0 toolchain
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
@@ -87,7 +87,7 @@ jobs:
       - name: "Select toolchain"
         uses: dtolnay/rust-toolchain@stable
         with:
-          toolchain: "1.56.1"
+          toolchain: "1.63.0"
       - name: "Set dependencies"
         run: cp Cargo-${{ matrix.dep }}.lock Cargo.lock
       - name: "Run test script"
diff --git a/README.md b/README.md
index 7e05f9a..432b583 100644
--- a/README.md
+++ b/README.md
@@ -29,4 +29,10 @@ from `rust-bitcoincore-rpc` was just shamelessy stolen. As such I have maintaine
 author's list and added my own name for accountability. All bugs are my own (tcharding).
 
 - [rust-bitcoincore-rpcv0.19.0](https://github.com/rust-bitcoin/rust-bitcoincore-rpc)
-- [`bitcoind`](https://crates.io/crates/bitcoind)
\ No newline at end of file
+- [`bitcoind`](https://crates.io/crates/bitcoind)
+
+## Minimum Supported Rust Version (MSRV)
+
+This library should always compile with any combination of features on **Rust 1.63.0**.
+
+Use `Cargo-minimal.lock` to build the MSRV by copying to `Cargo.lock` and building.
diff --git a/client/Cargo.toml b/client/Cargo.toml
index 40c967f..f21e733 100644
--- a/client/Cargo.toml
+++ b/client/Cargo.toml
@@ -14,7 +14,7 @@ categories = ["cryptography::cryptocurrencies"]
 keywords = ["bitcoin", "bitcoind", "json-rpc"]
 readme = "README.md"
 edition = "2021"
-rust-version = "1.56.1"
+rust-version = "1.63.0"
 exclude = ["tests", "contrib"]
 
 [package.metadata.docs.rs]
diff --git a/clippy.toml b/clippy.toml
index 173999b..ddca6b4 100644
--- a/clippy.toml
+++ b/clippy.toml
@@ -1,2 +1,2 @@
-msrv = "1.56.1"
+msrv = "1.63.0"
 too-many-arguments-threshold = 13
diff --git a/json/Cargo.toml b/json/Cargo.toml
index 8ed6785..f23bb10 100644
--- a/json/Cargo.toml
+++ b/json/Cargo.toml
@@ -14,7 +14,7 @@ categories = ["cryptography::cryptocurrencies"]
 keywords = ["bitcoin", "bitcoind", "json-rpc"]
 readme = "README.md"
 edition = "2021"
-rust-version = "1.56.1"
+rust-version = "1.63.0"
 exclude = ["tests", "contrib"]
 
 [features]
diff --git a/regtest/Cargo.toml b/regtest/Cargo.toml
index 3f2cc40..2d3c7c6 100644
--- a/regtest/Cargo.toml
+++ b/regtest/Cargo.toml
@@ -9,7 +9,7 @@ categories = ["cryptography::cryptocurrencies", "development-tools::testing"]
 keywords = ["bitcoin", "bitcoind", "json-rpc"]
 readme = "README.md"
 edition = "2021"
-rust-version = "1.56.1"
+rust-version = "1.63.0"
 exclude = ["tests", "contrib"]
 
 [dependencies]
diff --git a/regtest/clippy.toml b/regtest/clippy.toml
deleted file mode 100644
index 56ce04e..0000000
--- a/regtest/clippy.toml
+++ /dev/null
@@ -1 +0,0 @@
-msrv = "1.56.1"