diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 2d0a195..1d9ec3e 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -33,7 +33,7 @@ jobs:
     - name: Install Cargo Make
       uses: davidB/rust-cargo-make@v1
 
-    - name: Install Birli Dependencies
+    - name: Install Dependencies
       run: |
         cargo make install_deps
 
diff --git a/Cargo.lock b/Cargo.lock
index 6d0d58b..452569e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -9,7 +9,6 @@ dependencies = [
  "cc",
  "cxx",
  "cxx-build",
- "unicode-width 0.1.11 (git+https://github.com/unicode-rs/unicode-width?tag=v0.1.11)",
 ]
 
 [[package]]
@@ -30,7 +29,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3538270d33cc669650c4b093848450d380def10c331d38c768e34cac80576e6e"
 dependencies = [
  "termcolor",
- "unicode-width 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-width",
 ]
 
 [[package]]
@@ -169,11 +168,6 @@ version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e51733f11c9c4f72aa0c160008246859e340b00807569a0da0e7a1079b27ba85"
 
-[[package]]
-name = "unicode-width"
-version = "0.1.11"
-source = "git+https://github.com/unicode-rs/unicode-width?tag=v0.1.11#89424871950f91033de79cd06318d8c06d94df84"
-
 [[package]]
 name = "winapi-util"
 version = "0.1.9"
diff --git a/Cargo.toml b/Cargo.toml
index 7f70b1e..0d50ec5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,4 +23,4 @@ cc = { version = "1.0.99", features = ["parallel"] }
 cxx-build = "~1.0.87"
 
 # unicode-width 0.1.14 uses library feature 'mixed_integer_ops', unstable in 1.63
-unicode-width = { git = "https://github.com/unicode-rs/unicode-width", tag = "v0.1.11" }
+# unicode-width = { git = "https://github.com/unicode-rs/unicode-width", tag = "v0.1.11" }
diff --git a/Makefile.toml b/Makefile.toml
index 9f16d25..073fdbe 100644
--- a/Makefile.toml
+++ b/Makefile.toml
@@ -34,7 +34,14 @@ dependencies = ["linux_apt_get_essentials"]
 
 [tasks.linux_install_aoflagger]
 script = """
+# set sudo command if user is not root
 [ $(id -u) != 0 ] && export SUDO="sudo" || export SUDO=""
+
+# if ubuntu > 21.04, install through apt
+$(source /etc/os-release && dpkg --compare-versions "$VERSION_ID" gt "21.04" &> /dev/null) \
+  && $SUDO apt-get install -y aoflagger-dev \
+  && exit 0
+
 $SUDO apt-get install -y \
     casacore-data \
     casacore-dev \
diff --git a/RELEASES.md b/RELEASES.md
index 2a1c5f2..e482f4e 100644
--- a/RELEASES.md
+++ b/RELEASES.md
@@ -12,4 +12,4 @@
 
 # Version 0.1.0 (2021-08-31)
 
-- First release!
\ No newline at end of file
+- First release!