diff --git a/.taskcluster.yml b/.taskcluster.yml
index a9ff57755d..2f0d45b390 100644
--- a/.taskcluster.yml
+++ b/.taskcluster.yml
@@ -133,7 +133,7 @@ tasks:
             servo-tidy
             sccache --stop-server || true
             mkdir -p ../artifacts
-            RUST_LOG=sccache=trace SCCACHE_ERROR_LOG=$PWD/../artifacts/sccache.log sccache --start-server
+            RUST_LOG=sccache=trace SCCACHE_ERROR_LOG=$PWD/../artifacts/sccache.log SCCACHE_IDLE_TIMEOUT=0 sccache --start-server
             export RUST_BACKTRACE=full
             export RUSTFLAGS='--deny warnings'
             export PKG_CONFIG_PATH="/usr/local/opt/zlib/lib/pkgconfig:$PKG_CONFIG_PATH"