diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 23e100fd..db65832c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,6 +30,7 @@ jobs:
           flex \
           gcc \
           git \
+          libmpfr-dev \
           libboost-program-options-dev \
           ninja-build \
           python3 \