diff --git a/.drone.yml b/.drone.yml
index b9a56ed8f..403fefa40 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -184,7 +184,7 @@ steps:
   commands:
     - echo "MAKE_FLAGS:= $COMMON_FLAGS"
     - apt-get update -y
-    - apt-get install -y make $CC gfortran perl python3 python3-pip wget
+    - apt-get install -y make $CC gfortran perl python3 python3-pip python3-cython wget
     - $CC --version
     - make QUIET_MAKE=1 $COMMON_FLAGS
     - pip3 install numpy