diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 45812fb..bdce472 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -9,6 +9,8 @@ stages:
 firmware:
   stage: build
   image: python:2.7-stretch
+  cache: 
+    - .pioenvs/build
   before_script:
     - pip install -U platformio
   script:
@@ -19,6 +21,8 @@ firmware:
 
 release:
   stage: production
+  cache: 
+    - .pioenvs/build
   script:
     - mkdir release
     - mv .pioenvs/build/firmware.bin release