diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..a4e9e22
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,11 @@
+name: CI
+on: [push, pull_request]
+
+jobs:
+  test:
+    name: cargo test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+      - run: cargo test
\ No newline at end of file
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 1a5438a..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,31 +0,0 @@
-language: rust
-
-matrix:
-  include:
-    - env: TARGET=x86_64-unknown-linux-gnu
-
-    - env: TARGET=thumbv7m-none-eabi
-
-before_install: set -e
-
-install:
-  - bash ci/install.sh
-
-script:
-  - bash ci/script.sh
-
-after_script: set +e
-
-cache: cargo
-before_cache:
-  # Travis can't cache files that are not readable by "others"
-  - chmod -R a+r $HOME/.cargo
-
-branches:
-  only:
-    - staging
-    - trying
-
-notifications:
-  email:
-    on_success: never
diff --git a/ci/install.sh b/ci/install.sh
deleted file mode 100644
index ea7997c..0000000
--- a/ci/install.sh
+++ /dev/null
@@ -1,7 +0,0 @@
-set -euxo pipefail
-
-main() {
-    rustup target add $TARGET
-}
-
-main
diff --git a/ci/script.sh b/ci/script.sh
deleted file mode 100644
index 452afcc..0000000
--- a/ci/script.sh
+++ /dev/null
@@ -1,11 +0,0 @@
-set -euxo pipefail
-
-main() {
-    if [ $TARGET = x86_64-unknown-linux-gnu ]; then
-        cargo test --target $TARGET
-    else
-        cargo check --target $TARGET
-    fi
-}
-
-main
diff --git a/src/lib.rs b/src/lib.rs
index 25f313b..802366d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -173,7 +173,7 @@ where
 
 impl<A, T> Borrow<T> for Aligned<A, T>
 where
-    A: sealed::Alignment,
+    A: Alignment,
 {
     fn borrow(&self) -> &T {
         &self.value
@@ -182,7 +182,7 @@ where
 
 impl<A, T> BorrowMut<T> for Aligned<A, T>
 where
-    A: sealed::Alignment,
+    A: Alignment,
 {
     fn borrow_mut(&mut self) -> &mut T {
         &mut self.value
@@ -191,7 +191,7 @@ where
 
 impl<A, T> Borrow<[<Aligned<A, T> as AsSlice>::Element]> for Aligned<A, T>
 where
-    A: sealed::Alignment,
+    A: Alignment,
     Aligned<A, T>: AsSlice,
 {
     fn borrow(&self) -> &[<Aligned<A, T> as AsSlice>::Element] {
@@ -201,7 +201,7 @@ where
 
 impl<A, T> BorrowMut<[<Aligned<A, T> as AsSlice>::Element]> for Aligned<A, T>
 where
-    A: sealed::Alignment,
+    A: Alignment,
     Aligned<A, T>: AsMutSlice,
 {
     fn borrow_mut(&mut self) -> &mut [<Aligned<A, T> as AsSlice>::Element] {