diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index fed2681..9d6361d 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -7,17 +7,14 @@ on:
       - '[0-9].[0-9].[0-9]'
 
 jobs:
-  build_release:
-    name: build and release
-    runs-on: ubuntu-20.04  # Build on Debian-based distro
+  build:
+    name: build
+    runs-on: ubuntu-20.04
     container: quay.io/pypa/manylinux2014_x86_64  # Use a container with glibc 2.17
     steps:
 
-      - name: Show GLIBC  # Confirm glibc version
-        run: ldd --version
-
       - name: Checkout  # Clone repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -33,24 +30,51 @@ jobs:
           toolchain: stable
           override: true
 
-      - name: Cargo build  # Release build
+      - name: Cargo build  # Build for release
         run: |
           cargo build --release --verbose
           ls -lah target/release
 
-      - name: Cargo deb  # deb package
+      - name: Cargo deb  # Package deb
         run: |
           cargo install --version 1.44.1 cargo-deb
-          cargo deb --verbose
+          cargo deb --no-build --verbose
           ls -lah target/debian
 
-      - name: Cargo rpm  # RPM package
+      - name: Cargo rpm  # Package RPM
         run: |
           cargo install --version 0.14.0 cargo-generate-rpm
           strip -s target/release/libnss_shim.so
           cargo generate-rpm --payload-compress none
           ls -lah target/generate-rpm
 
+      - uses: uraimo/run-on-arch-action@v2  # Cross-build (arm64/aarch64)
+        name: Cross-build (arm64/aarch64)
+        with:
+          base_image: quay.io/pypa/manylinux2014_aarch64
+          env: |
+            VERSION: ${{github.ref_name}}
+          # Mount the working directory as /libnss_shim in the container, and run commands there
+          dockerRunArgs: |
+            --volume "${PWD}:/libnss_shim"
+            -w "/libnss_shim"
+          # Speeds up builds
+          githubToken: ${{ github.token }}
+          # Prepare cached dependencies
+          setup: |
+            curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+            . "$HOME/.cargo/env"
+            cargo install --version 1.44.1 cargo-deb
+            cargo install --version 0.14.0 cargo-generate-rpm
+          run: |
+            . "$HOME/.cargo/env"
+            cargo build --release --verbose
+            ls -lah target/release
+            cargo deb --no-build --verbose
+            ls -lah target/debian
+            cargo generate-rpm --payload-compress none
+            ls -lah target/generate-rpm
+
       - name: Release  # Publish GitHub release
         uses: softprops/action-gh-release@v1
         if: startsWith(github.ref, 'refs/tags/')  # Presumably redundant due to the `on: push: tags:` filter, but kept for safety
diff --git a/README.md b/README.md
index f33c966..594044b 100755
--- a/README.md
+++ b/README.md
@@ -46,7 +46,7 @@ can print to `stdout` in a supported format to be used with NSS.
   as described in `Cargo.toml` prior to running the `debian/postinst` script, but this has not been tested extensively.
 - To request support for a different configuration, please create a GitHub Issue
 
-### Installation steps
+### Install/Upgrade
 
 1. Prepare the commands/software that will be triggered by `libnss_shim` (see the Commands section for details).
 
@@ -61,7 +61,7 @@ can print to `stdout` in a supported format to be used with NSS.
     wget https://github.com/xenago/libnss_shim/releases/download/1.1.0/libnss_shim-1.1.0-1.x86_64.rpm
     ```
 
-3. Install it directly `dpkg` or `rpm`.
+3. Install or upgrade it directly with `dpkg` or `rpm`.
 
    **deb:**
     ```
@@ -69,10 +69,10 @@ can print to `stdout` in a supported format to be used with NSS.
     ```
    **RPM:**
     ```
-    sudo rpm -i ./libnss_shim-1.1.0-1.x86_64.rpm
+    sudo rpm -Uvh ./libnss_shim-1.1.0-1.x86_64.rpm
     ```
 
-4. Configure the shim by importing a custom `config.json`:
+4. Configure the shim by importing a custom `config.json`.
     ```
     sudo cp custom_config.json /etc/libnss_shim/config.json
     ```
@@ -102,17 +102,19 @@ can print to `stdout` in a supported format to be used with NSS.
 
 ## Uninstallation
 
-1. To remove `libnss_shim`, use either `dpkg` or `apt`:
-   ```
-   dpkg -r libnss_shim
-   ```
-   or
-   ```
-   sudo apt remove libnss_shim
-   ```
+1. To remove `libnss_shim`, run the same tool used for installation.
+
+    **deb:**
+    ```
+    dpkg -r libnss_shim
+    ```
+    **RPM:**
+    ```
+    sudo sudo rpm -e libnss_shim
+    ```
 
 2. If removal/deletion is performed, restarting affected applications is required. A system reboot is an effective way
-   to do this:
+   to do this.
    ```
    sudo reboot
    ```
@@ -359,7 +361,9 @@ I generally find it easiest to run `build.sh` inside a temporary container:
 
 3. Run the build script inside a temporary container, setting `LIBNSS_SHIM_VERSION` and the cloned repo path as desired:
 
-       sudo docker run -e "LIBNSS_SHIM_VERSION=0.0.0" -v /path/to/cloned/libnss_shim:/libnss_shim --rm -it quay.io/pypa/manylinux2014_x86_64:latest bash /libnss_shim/build.sh
+       sudo docker run -e "LIBNSS_SHIM_VERSION=0.0.0" -v /path/to/cloned/libnss_shim:/libnss_shim -v /var/run/docker.sock:/var/run/docker.sock --rm -it quay.io/pypa/manylinux2014_x86_64:latest bash /libnss_shim/build.sh
+
+   Note that this requires 
 
 4. The build script will output packages in the following subdirectories of the cloned repo:
 
diff --git a/build.sh b/build.sh
index 2c92d34..6caf060 100644
--- a/build.sh
+++ b/build.sh
@@ -17,7 +17,7 @@ ls -lah target/release
 
 echo "BUILD: Packaging deb"
 cargo install --version 1.44.1 cargo-deb
-cargo deb --verbose
+cargo deb --verbose --no-build
 echo "BUILD: deb packaged"
 ls -lah target/debian
 
@@ -27,3 +27,24 @@ strip -s target/release/libnss_shim.so
 cargo generate-rpm --payload-compress none
 echo "BUILD: RPM packaged"
 ls -lah target/generate-rpm
+
+# TODO: enable local cross-build with docker-in-docker
+
+#echo "BUILD: Cross-building for release (arm64/aarch64)"
+#cargo install --version 0.2.5 cross
+#env CROSS_CONTAINER_IN_CONTAINER=true cross build --release --target aarch64-unknown-linux-gnu
+#echo "BUILD: built for release (arm64/aarch64)"
+#ls -lah target/aarch64-unknown-linux-gnu/release
+#
+#echo "BUILD: Packaging deb (arm64/aarch64)"
+#cargo deb --target=aarch64-unknown-linux-gnu --no-build --verbose
+#echo "BUILD: deb packaged (arm64/aarch64)"
+#ls -lah target/aarch64-unknown-linux-gnu/debian
+#
+#echo "BUILD: Packaging RPM (arm64/aarch64)"
+## FIXME: use script when possible for --auto-req
+## See https://github.com/cat-in-136/cargo-generate-rpm/issues/107
+## --auto-req "cross/find-requires.sh"
+#cargo generate-rpm --payload-compress none --target aarch64-unknown-linux-gnu --auto-req disabled
+#echo "BUILD: RPM packaged (arm64/aarch64)"
+#ls -lah target/aarch64-unknown-linux-gnu/generate-rpm
diff --git a/changelog/CHANGELOG.txt b/changelog/CHANGELOG.txt
index 8d0f0c5..dbbded3 100644
--- a/changelog/CHANGELOG.txt
+++ b/changelog/CHANGELOG.txt
@@ -2,3 +2,8 @@
 - Required change: 64-bit integer types to platform-dependent `size` pointer types
 - Remove `lazy_static` dependency
 - Add additional resource, update formatting of `README.md`
+- Bump toolchain to 1.78.0
+- Add ARM compile step to CI
+- Adjust README.md to clarify install/upgrade are the same process
+- Add RPM uninstall notes to README.md
+- Add find-requires script for build (not yet implemented)
diff --git a/cross/find-requires.sh b/cross/find-requires.sh
new file mode 100755
index 0000000..51c86c2
--- /dev/null
+++ b/cross/find-requires.sh
@@ -0,0 +1,10 @@
+#!/bin/sh
+
+# Fail fast on any error
+set -e
+
+# This is designed to replicate the output from the `find-requires` RPM script
+# http://ftp.rpm.org/max-rpm/s1-rpm-depend-auto-depend.html
+# That script uses `ldd`, which doesn't seem to work with cross-compiled binaries
+# https://github.com/cat-in-136/cargo-generate-rpm/issues/107
+objdump -x "$1" | grep NEEDED  | awk '{print $NF}'
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 7897a24..5198580 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,2 +1,2 @@
 [toolchain]
-channel = "1.75.0"
+channel = "1.78.0"