diff --git a/Tests/NumLib/TestExtrapolation.cpp b/Tests/NumLib/TestExtrapolation.cpp
index 0d247a0be1258634865133d04541e9b3e781fa37..de9ddc5eb7a46ba869fa376f03c8a82dc93a381e 100644
--- a/Tests/NumLib/TestExtrapolation.cpp
+++ b/Tests/NumLib/TestExtrapolation.cpp
@@ -219,7 +219,7 @@ void extrapolate(ExtrapolationTestProcess const& pcs,
 {
     namespace LinAlg = MathLib::LinAlg;
 
-    auto const tolerance_dx = 30.0 * std::numeric_limits<double>::epsilon();
+    auto const tolerance_dx = 31.0 * std::numeric_limits<double>::epsilon();
     auto const tolerance_res = 15.0 * std::numeric_limits<double>::epsilon();
 
     const double t = 0.0;