diff --git a/.circleci/config.yml b/.circleci/config.yml
index 87f12eb..e82b4a9 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -6,6 +6,7 @@ jobs:
     steps:
     - checkout
     - run: chmod +x -v *.sh
+    - run: sudo ln -svf /usr/include/x86_64-linux-gnu/zconf.h /usr/include/zconf.h
     - run: sudo ./runit-all.sh 64
     - persist_to_workspace:
         root: /tmp/danio-gcc/64
@@ -17,6 +18,7 @@ jobs:
     steps:
     - checkout
     - run: chmod +x -v *.sh
+    - run: sudo ln -svf /usr/include/x86_64-linux-gnu/zconf.h /usr/include/zconf.h
     - run: sudo ./runit-all.sh 32
     - persist_to_workspace:
         root: /tmp/danio-gcc/32