diff --git a/.github/workflows/clang.yml b/.github/workflows/clang.yml
index 9ebe978..85b3183 100644
--- a/.github/workflows/clang.yml
+++ b/.github/workflows/clang.yml
@@ -15,7 +15,7 @@ jobs:
     - uses: actions/checkout@v2
     - name: Install dependencies
       run: |
-       sudo apt install clang autoconf libpcap-dev libssl-dev
+       sudo apt install clang autoconf libpcap-dev libssl-dev libnet1-dev
     - name: autogen
       run: ./autogen.sh
     - name: configure
diff --git a/.github/workflows/gcc.yml b/.github/workflows/gcc.yml
index 44a6f3a..b441140 100644
--- a/.github/workflows/gcc.yml
+++ b/.github/workflows/gcc.yml
@@ -15,7 +15,7 @@ jobs:
     - uses: actions/checkout@v2
     - name: Install dependencies
       run: |
-       sudo apt install autoconf libpcap-dev libssl-dev
+       sudo apt install autoconf libpcap-dev libssl-dev libnet1-dev
     - name: autogen
       run: ./autogen.sh
     - name: configure
diff --git a/README.md b/README.md
index 86f9a5a..e187fa9 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,7 @@ Additional back-end code available is in the [crl-monitor ](https://github.com/a
 
 On Debian & Ubuntu:
 ```
-apt install build-essential autoconf libssl-dev libpcap-dev
+apt install build-essential autoconf libssl-dev libpcap-dev libnet1-dev
 ./autogen.sh
 ./configure --prefix=/usr/local
 make
@@ -45,7 +45,7 @@ make
 
 On Fedora, Centos & RHEL:
 ```
-dnf install autoconf automake gcc make openssl-devel libpcap-devel
+dnf install autoconf automake gcc make openssl-devel libpcap-devel libnet1-dev
 ./autogen.sh
 ./configure --prefix=/usr/local
 make