diff --git a/.travis.yml b/.travis.yml
index 83c4d831..3d4aa4b0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,21 +18,30 @@ matrix:
         - language: rust
           rust: 1.27.2
           cache:
-            cargo: true
+            directories:
+              - /home/travis/.cargo
+          before_cache:
+            - rm -rf /home/travis/.cargo/registry
           script:
             - cargo build --all --all-features -j 1  || exit 1
             - cargo test  --all --all-features -j 1  || exit 1
         - language: rust
           rust: 1.28.0
           cache:
-            cargo: true
+            directories:
+              - /home/travis/.cargo
+          before_cache:
+            - rm -rf /home/travis/.cargo/registry
           script:
             - cargo build --all --all-features -j 1  || exit 1
             - cargo test  --all --all-features -j 1  || exit 1
         - language: rust
           rust: stable
           cache:
-            cargo: true
+            directories:
+              - /home/travis/.cargo
+          before_cache:
+            - rm -rf /home/travis/.cargo/registry
           script:
             - cargo build --all --all-features -j 1  || exit 1
             - cargo test  --all --all-features -j 1  || exit 1