diff --git a/regtest/analysis/rt-uweights-integral/colvar.reference b/regtest/analysis/rt-uweights-integral/colvar.reference
index 57c2dcbc932d8ba81d9d38eda352cfe52f63fb6b..9f8e86f2a313158f09db50922118c4b161ec1687 100644
--- a/regtest/analysis/rt-uweights-integral/colvar.reference
+++ b/regtest/analysis/rt-uweights-integral/colvar.reference
@@ -3,4 +3,4 @@
  1.000000   0.5437   0.2128   4.2565
  2.000000   0.0000   2.8124  56.2470
  3.000000   0.0000   2.8122  56.2440
- 4.000000   2.0008   7.8226 156.4529
+ 4.000000   2.0008   7.8230 156.4606
diff --git a/regtest/analysis/rt-uweights-integral/forces.reference b/regtest/analysis/rt-uweights-integral/forces.reference
index 7fad8efe21e25e8d744a8b9638935061204fa76e..db9ade3b3bbc9feb36182c5eef50b240581f25ec 100644
--- a/regtest/analysis/rt-uweights-integral/forces.reference
+++ b/regtest/analysis/rt-uweights-integral/forces.reference
@@ -811,9 +811,9 @@ X   0.0000   0.0000   0.0000
 X   0.0000   0.0000   0.0000
 X   0.0000   0.0000   0.0000
 201
- -0.0689   0.0557   0.0132
-X   0.0711   0.0893  -0.0108
-X  -0.0711  -0.0893   0.0108
+ -0.0650   0.0517   0.0132
+X   0.0676   0.0839  -0.0108
+X  -0.0676  -0.0839   0.0108
 X   0.0266   0.0072  -0.0013
 X  -0.0000  -0.0000   0.0000
 X  -0.0266  -0.0072   0.0013
diff --git a/regtest/analysis/rt-weights-integral/colvar.reference b/regtest/analysis/rt-weights-integral/colvar.reference
index bf707a0bffe0c37ad5b5b9fec1899c8e03763745..ae29b0884511619af3264e69a9b1b28ab95baa73 100644
--- a/regtest/analysis/rt-weights-integral/colvar.reference
+++ b/regtest/analysis/rt-weights-integral/colvar.reference
@@ -3,4 +3,4 @@
  1.000000   0.9993   0.3108   6.2163
  2.000000   1.0002   0.3130   6.2595
  3.000000   0.9888   0.2852   5.7033
- 4.000000   1.0004   0.3135   6.2703
+ 4.000000   1.0004   0.3136   6.2711
diff --git a/regtest/analysis/rt-weights-integral/forces.reference b/regtest/analysis/rt-weights-integral/forces.reference
index 532a9a71f8587df65d1bce724d324054cc3f71c4..85241550d3df289915013904da52b678e9c8d23c 100644
--- a/regtest/analysis/rt-weights-integral/forces.reference
+++ b/regtest/analysis/rt-weights-integral/forces.reference
@@ -811,9 +811,9 @@ X   0.0000   0.0000   0.0000
 X   0.0000   0.0000   0.0000
 X   0.0000   0.0000   0.0000
 201
- -0.0069   0.0056   0.0013
-X   0.0071   0.0089  -0.0011
-X  -0.0071  -0.0089   0.0011
+ -0.0065   0.0052   0.0013
+X   0.0068   0.0084  -0.0011
+X  -0.0068  -0.0084   0.0011
 X   0.0027   0.0007  -0.0001
 X   0.0000   0.0000  -0.0000
 X  -0.0027  -0.0007   0.0001