diff --git a/ci/test.sh b/ci/test.sh
index 1d5da9e2a7..ff3935579a 100755
--- a/ci/test.sh
+++ b/ci/test.sh
@@ -48,7 +48,7 @@ function run_unit_tests {
     banner "Running unit tests"
 
     pushd build
-    (. ./zeek-path-dev.sh && zeek --test --no-skip) || result=1
+    (. ./zeek-path-dev.sh && TZ=UTC zeek --test --no-skip) || result=1
     popd
     return 0
 }