diff --git a/.drone.yml b/.drone.yml
index 9557698..5428bf0 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -9,6 +9,7 @@ steps:
   commands:
   - id
   - python -V
+  - apt update && apt install -y gcc g++ libicu-dev pkg-config
   - pip install -r requirements-dev.txt
   - pytest
   - python setup.py install
@@ -25,6 +26,7 @@ steps:
   commands:
   - id
   - python -V
+  - apt update && apt install -y gcc g++ libicu-dev pkg-config
   - pip install -r requirements-dev.txt
   - pytest
   - python setup.py install
@@ -41,6 +43,7 @@ steps:
   commands:
   - id
   - python -V
+  - apt update && apt install -y gcc g++ libicu-dev pkg-config
   - pip install -r requirements-dev.txt
   - pytest
   - python setup.py install