diff --git a/build/install-deps-ubuntu.sh b/build/install-deps-ubuntu.sh
new file mode 100755
index 000000000..5ae23ca83
--- /dev/null
+++ b/build/install-deps-ubuntu.sh
@@ -0,0 +1,10 @@
+#! /bin/sh
+set -euxo pipefail
+
+DEBIAN_FRONTEND=noninteractive apt install --yes \
+    libtool \
+    build-essential \
+    pkg-config \
+    cli-common-dev \
+    mono-devel \
+    libgtk2.0-cil-dev
diff --git a/build/snap-build.sh b/build/snap-build.sh
index 416674641..dc9bf649c 100755
--- a/build/snap-build.sh
+++ b/build/snap-build.sh
@@ -1,9 +1,7 @@
 #!/usr/bin/env bash
 set -euxo pipefail
 
-# this is the equivalent of using the 'build-packages' (not stage-packages) section in snapcraft
-# but as we're not using the 'make' plugin, we need to this manually now
-DEBIAN_FRONTEND=noninteractive sudo apt install -y build-essential pkg-config cli-common-dev mono-devel libgtk2.0-cil-dev
+sudo ./build/install-deps-ubuntu.sh
 
 # just in case this is a retry-run, we want to clean artifacts from previous try
 rm -rf ./staging