diff --git a/Cargo.lock b/Cargo.lock
index a28c5aa..b56d9dc 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2381,7 +2381,7 @@ dependencies = [
 
 [[package]]
 name = "peach-config"
-version = "0.1.21"
+version = "0.1.23"
 dependencies = [
  "clap",
  "env_logger 0.6.2",
diff --git a/peach-config/Cargo.toml b/peach-config/Cargo.toml
index f3168de..679d4d9 100644
--- a/peach-config/Cargo.toml
+++ b/peach-config/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "peach-config"
-version = "0.1.21"
+version = "0.1.23"
 authors = ["Andrew Reid <gnomad@cryptolab.net>", "Max Fowler <max@mfowler.info>"]
 edition = "2018"
 description = "Command line tool for installing, updating and configuring PeachCloud"
diff --git a/peach-config/src/generate_manifest.rs b/peach-config/src/generate_manifest.rs
index 78f0d87..d69b12e 100644
--- a/peach-config/src/generate_manifest.rs
+++ b/peach-config/src/generate_manifest.rs
@@ -1,40 +1,32 @@
-use regex::Regex;
 use serde::{Deserialize, Serialize};
 use snafu::ResultExt;
 use std::collections::HashMap;
 use std::fs;
 
-use crate::constants::HARDWARE_CONFIG_FILE;
+use crate::constants::{HARDWARE_CONFIG_FILE, SERVICES};
 use crate::error::{FileReadError, FileWriteError, PeachConfigError};
 use crate::utils::get_output;
 use crate::RtcOption;
 
+/// Helper function which returns the version of a package currently installed,
+/// as an Ok(String) if found, and as an Err if not found
+pub fn get_package_version_number(package: &str) -> Result<String, PeachConfigError> {
+    let version = get_output(&["dpkg-query", "--showformat=${Version}", "--show", package])?;
+    Ok(version)
+}
+
 /// Returns a HashMap<String, String> of all the peach-packages which are currently installed
 /// mapped to their version number e.g. { "peach-probe": "1.2.0", "peach-network": "1.4.0" }
 pub fn get_currently_installed_microservices() -> Result<HashMap<String, String>, PeachConfigError>
 {
-    // gets a list of all packages currently installed with dpkg
-    let packages = get_output(&["dpkg", "-l"])?;
-
-    // this regex matches packages which contain the word peach in them
-    // and has two match groups
-    // 1. the first match group gets the package name
-    // 2. the second match group gets the version number of the package
-    let re: Regex = Regex::new(r"\S+\s+(\S*peach\S+)\s+(\S+).*\n").unwrap();
-
-    // the following iterator, iterates through the captures matched via the regex
-    // and for each capture, creates a value in the hash map,
-    //  which maps the name of the package, to its version number
-    // e.g. { "peach-probe": "1.2.0", "peach-network": "1.4.0" }
-    let peach_packages: HashMap<String, String> = re
-        .captures_iter(&packages)
-        .filter_map(|cap| {
-            let groups = (cap.get(1), cap.get(2));
-            match groups {
-                (Some(package), Some(version)) => {
-                    Some((package.as_str().to_string(), version.as_str().to_string()))
-                }
-                _ => None,
+    // gets a list of all packages currently installed with dpkg-query
+    let peach_packages: HashMap<String, String> = SERVICES
+        .iter()
+        .filter_map(|service| {
+            let version = get_package_version_number(service);
+            match version {
+                Ok(v) => Some((service.to_string(), v)),
+                Err(_) => None,
             }
         })
         .collect();