diff --git a/requirements-dev.txt b/requirements-dev.txt
index 813d15aa1ea7686dc67509a88d2d8a37ed4fe294..ee2d85132d6618f32589afa20104497da3ab10af 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,4 +1,4 @@
-km3net-testdata>=0.2.6
+km3net-testdata>=0.2.5
 matplotlib
 memory_profiler
 numpydoc==0.9.2