diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index ad3268b..cb0f4b7 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -1,68 +1,78 @@
 permissions:
   contents: read
 
-# runs on push to the main branch, and PRs
+# runs on push to the master branch, and PRs
 on:
   push:
-    branches: [main]
+    branches: [master]
   pull_request:
-name: "check"
-jobs:
+name: check
 
-  # 1. formatting
+jobs:
+  # 1. format
   fmt:
     name: "stable / fmt"
     runs-on: ubuntu-latest
     steps:
       - name: "checkout"
         uses: actions/checkout@v3
+        with:
+            submodules: true
+
       - name: "Install stable"
         uses: dtolnay/rust-toolchain@stable
         with:
           components: rustfmt
+
       - name: "cargo fmt --check"
         run: cargo fmt --check
 
-  # 2. clippy lints
-  clippy:
-    name: "${{ matrix.toolchain }} / clippy"
-    runs-on: ubuntu-latest
-    permissions:
-      contents: read
-      checks: write
-    strategy:
-      fail-fast: false
-      matrix:
-        toolchain: [stable]
-        # toolchain: [stable, beta]
-    steps:
-      - name: "checkout"
-        uses: actions/checkout@v3
-      - name: "Install ${{ matrix.toolchain }}"
-        uses: dtolnay/rust-toolchain@master
-        with:
-          toolchain: ${{ matrix.toolchain }}
-          components: clippy
-      - name: "cargo clippy"
-        # NOTE: custom
-        run: cargo clippy --features=std,use_vendored_bindings
+  # # 2. clippy lints
+  # clippy:
+  #   name: "${{ matrix.toolchain }} / clippy"
+  #   runs-on: ubuntu-latest
+  #   permissions:
+  #     contents: read
+  #     checks: write
+  #   strategy:
+  #     fail-fast: false
+  #     matrix:
+  #       toolchain: [stable]
+  #       # toolchain: [stable, beta]
+  #   steps:
+  #     - name: "checkout"
+  #       uses: actions/checkout@v3
+  #       with:
+  #           submodules: true
+  #
+  #     - name: "Install ${{ matrix.toolchain }}"
+  #       uses: dtolnay/rust-toolchain@master
+  #       with:
+  #         toolchain: ${{ matrix.toolchain }}
+  #         components: clippy
+  #
+  #     - name: "cargo clippy"
+  #       run: cargo clippy --features=vendored
 
-  # 2. documentation
+  # 3. documentation
   doc:
+    name: "nightly / doc"
     runs-on: ubuntu-latest
-    name: nightly / doc
     steps:
       - name: "checkout"
         uses: actions/checkout@v3
+        with:
+            submodules: true
+
       - name: "Install nightly"
         uses: dtolnay/rust-toolchain@nightly
+
       - name: "cargo doc"
-        # NOTE: custom
-        run: cargo doc --features=nightly,std,use_vendored_bindings
+        run: cargo doc --features=nightly_docs
         env:
           RUSTDOCFLAGS: --cfg docsrs
 
-  # 4. MSRV
+  # 4. minimum supported Rust version
   msrv:
     name: "ubuntu / ${{ matrix.msrv }}"
     runs-on: ubuntu-latest
@@ -70,15 +80,17 @@ jobs:
     # https://docs.github.com/en/actions/learn-github-actions/contexts#context-availability
     strategy:
       matrix:
-        # NOTE: custom
-        msrv: [1.64.0]
+        msrv: [1.65.0] # sync with ../../{readme, Cargo.toml, check.sh}
     steps:
       - name: "checkout"
         uses: actions/checkout@v3
+        with:
+            submodules: true
+
       - name: "Install ${{ matrix.msrv }}"
         uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.msrv }}
+
       - name: "cargo +${{ matrix.msrv }} check"
-        # NOTE: custom
-        run: cargo check --features=std,use_vendored_bindings
+        run: cargo check --features=vendored
diff --git a/.github/workflows/rust-format.yml b/.github/workflows/rust-format.yml
deleted file mode 100644
index 5b95753..0000000
--- a/.github/workflows/rust-format.yml
+++ /dev/null
@@ -1,15 +0,0 @@
-name: Rust format
-
-on: [push]
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v1
-      - uses: icepuma/rust-action@master
-        with:
-          args: cargo fmt -- --check
-          # do not use clippy when using relative local dependencies:
-          # args: cargo fmt -- --check && cargo clippy -- -Dwarnings
diff --git a/Cargo.toml b/Cargo.toml
index 8eedbf3..82d814f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 name = "notcurses"
 version = "3.4.1"
 edition = "2021"
-rust-version = "1.64.0" # keep in sync with .github/workflows/check.yml
+rust-version = "1.65.0" # keep in sync with .github/workflows/check.yml
 authors = ["José Luis Cruz <joseluis@andamira.net>", "nick black <dankamongmen@gmail.com>"]
 license = "MIT OR Apache-2.0"
 description = "A high level Rust wrapper for the notcurses C library"
@@ -32,7 +32,8 @@ nightly_docs = ["vendored"]
 vendored = ['libnotcurses-sys/use_vendored_bindings']
 
 [dependencies]
-libnotcurses-sys = { version = "3.9.1", features = ["std"] }
+libnotcurses-sys = { version = "3.10.0", features = ["std"] }
+# libnotcurses-sys = { path = "../libnotcurses-sys", features = ["std"] }
 
 once_cell = "1.17.0"
 paste = "1.0.12"
diff --git a/README.md b/README.md
index 1755b77..b3e293a 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 [![Crate](https://img.shields.io/crates/v/notcurses.svg)](https://crates.io/crates/notcurses)
 [![API](https://docs.rs/notcurses/badge.svg)](https://docs.rs/notcurses/)
-[![MSRV: 1.64.0](https://flat.badgen.net/badge/MSRV/1.64.0/purple)](https://releases.rs/docs/released/1.64.0/)
+[![MSRV: 1.65.0](https://flat.badgen.net/badge/MSRV/1.65.0/purple)](https://releases.rs/docs/1.65.0/)
 
 A rusty wrapper over [notcurses][0], the most blingful TUI library.