diff --git a/TEST b/TEST
index f66be3cb8..127681188 100644
--- a/TEST
+++ b/TEST
@@ -83,6 +83,20 @@ Ubuntu*)
     ;;
 esac
 
+###
+#
+# Run ztest longer on the "coverage" builders to gain more code coverage
+# data out of ztest, libzpool, etc.
+#
+case "$BB_NAME" in
+*coverage*)
+    TEST_ZTEST_TIMEOUT=3600
+    ;;
+*)
+    TEST_ZTEST_TIMEOUT=900
+    ;;
+esac
+
 ###
 #
 # Disable the following test suites on 32-bit systems.