diff --git a/DNSCrypt.md b/DNSCrypt.md
index 92fdeac..28314fc 100644
--- a/DNSCrypt.md
+++ b/DNSCrypt.md
@@ -13,8 +13,8 @@ Please note, I take no responsibility for any breakage or corruption of your Pi-
 ### Install necessary system packages
 
     sudo apt-get update
-    sudo apt-get -y install build-essential tcpdump dnsutils libsodium-dev
-    sudo apt-get -y install locate bash-completion libsystemd-dev
+    sudo apt-get -y install build-essential tcpdump dnsutils libsodium-dev 
+    sudo apt-get -y install locate bash-completion libsystemd-dev pkg-config
 
 **Build DNSCrypt from the sources**