diff --git a/.cirrus.yml b/.cirrus.yml
index 2948b6d740..961e7351d1 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -160,6 +160,9 @@ env:
   # a solution for the mtime pruning above.
   ZEEK_CCACHE_EPOCH: 2
 
+  # Cache Spicy JIT results.
+  HILTI_CXX_COMPILER_LAUNCHER: ccache
+
 # Linux EOL timelines: https://linuxlifecycle.com/
 # Fedora (~13 months): https://fedoraproject.org/wiki/Fedora_Release_Life_Cycle