diff --git a/.travis.yml b/.travis.yml
index 4c51a88..01420da 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,7 +6,7 @@ matrix:
     dist: focal
     before_install:
     - sudo apt-get update -qq
-    - sudo apt-get install -y devscripts build-essential lintian dh-make autoconf lua-sql-postgres-dev automake gcc liblua5.2-dev libjansson-dev libcurl4-gnutls-dev libiniparser-dev libssl-dev libgd-dev libpng-dev libz3-dev libfreetype6-dev liblua5.1-dev libluajit-5.1-dev
+    - sudo apt-get install -y devscripts build-essential lintian dh-make autoconf lua-sql-postgres-dev automake gcc liblua5.2-dev libjansson-dev libcurl4-gnutls-dev libiniparser-dev libssl-dev libgd-dev libpng-dev libz3-dev libfreetype6-dev liblua5.1-dev libluajit-5.1-dev libgmp-dev
     compiler:
 #    - clang
     - gcc