diff --git a/CHANGELOG.md b/CHANGELOG.md
index c07761f..af8bb05 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 ## latest
 
+- Remove the `adaptivity_data` data structure and handle all adaptivity data internally https://github.com/precice/micro-manager/pull/137
 - Improve logging by wrapping Python logger in a class https://github.com/precice/micro-manager/pull/133
 - Refactor large parts of solve and adaptivity to group datasets and simplify handling https://github.com/precice/micro-manager/pull/135
 - Add information about adaptivity tuning parameters https://github.com/precice/micro-manager/pull/131
diff --git a/micro_manager/micro_manager.py b/micro_manager/micro_manager.py
index 2ad09d4..cdb2d3a 100644
--- a/micro_manager/micro_manager.py
+++ b/micro_manager/micro_manager.py
@@ -238,12 +238,10 @@ def solve(self) -> None:
 
             self._write_data_to_precice(micro_sims_output)
 
-            t += dt  # increase internal time when time step is done.
-            n += 1  # increase counter
+            t += dt
+            n += 1
 
-            self._participant.advance(
-                dt
-            )  # notify preCICE that time step of size dt is complete
+            self._participant.advance(dt)
 
             # Revert micro simulations to their last checkpoints if required
             if self._participant.requires_reading_checkpoint():