diff --git a/tests/reverse_dependencies_build/main.fmf b/tests/reverse_dependencies_build/main.fmf
index 2a74cf7..f444136 100644
--- a/tests/reverse_dependencies_build/main.fmf
+++ b/tests/reverse_dependencies_build/main.fmf
@@ -1,6 +1,15 @@
 summary: Reverse rebuild a dependency with scratch build artifact
 test: ./test.sh
 
+# When doing a fresh mock build (=~ no cached build root) the test can take
+# a bit over 5 minutes. Since 5 minutes is the default timeout, bump it
+# to 10 minutes for these tests.
+# Since rubygem packages require little to no compilation, the builds
+# are quite fast overall, so only 10m is reasonable for the package set
+# tested for the rubygem-cucumber stack.
+# NOTE: Caution is advised when adding other packages to this collection of tests.
+duration: 10m
+
 require+:
   - mock
   - python3-koji