diff --git a/.drone.yml b/.drone.yml
index ac685b1..c57acb0 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -7,16 +7,40 @@ concurrency:
     limit: 1
 
 steps:
+- name: clean cache
+  image: rustlang/rust:nightly
+  volumes:
+  - name: cache
+    path: /usr/local/cargo
+  - name: target-cache
+    path: /drone/src/target
+  commands:
+  - cargo sweep --maxsize 12GiB
 - name: build
   image: rustlang/rust:nightly
+  volumes:
+  - name: cache
+    path: /usr/local/cargo
+  - name: target-cache
+    path: /drone/src/target
   commands:
   - cargo build
 - name: clippy!
   image: rustlang/rust:nightly
+  volumes:
+  - name: cache
+    path: /usr/local/cargo
+  - name: target-cache
+    path: /drone/src/target
   commands:
   - cargo clippy -- --deny warnings
 - name: test
   image: rustlang/rust:nightly
+  volumes:
+  - name: cache
+    path: /usr/local/cargo
+  - name: target-cache
+    path: /drone/src/target
   commands:
   - cargo test --jobs 1