diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index b5c630a5d2..c432e8241b 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -21,7 +21,7 @@ jobs:
       sudo apt-get install -y \
         cmake libgmp-dev libmpfr-dev libmpc-dev \
         libboost-all-dev bison texinfo \
-        ruby flex
+        ruby flex curl
     displayName: 'install prerequisites'
   - script: |
       mkdir build