diff --git a/.travis.yml b/.travis.yml
index 8f3b20ad851..b0daedf127c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -33,7 +33,7 @@ env:
     - DOCKER_REPONAME=lbnlblum
     - BUILDINGSPY_VERSION=BuildingsPy@v5.1.0
     - OMC_VERSION=ubuntu-2204-omc:1.24.0-1
-    - OPTIMICA_VERSION=travis-ubuntu-2204-optimica:1.43.4_rev-1
+    - OPTIMICA_VERSION=travis-ubuntu-2204-optimica:1.55.11
     - DYMOLA_VERSION=travis_ubuntu-2004_dymola:2024xRefresh1-x86_64
     - ENERGYPLUS_9_6_0=EnergyPlus-9.6.0-f420c06a69-Linux-Ubuntu20.04-x86_64
     - ENERGYPLUS_23_1_0=EnergyPlus-23.1.0-87ed9199d4-Linux-Ubuntu20.04-x86_64
diff --git a/Buildings/Resources/Scripts/BuildingsPy/conf.yml b/Buildings/Resources/Scripts/BuildingsPy/conf.yml
index 33e16b1aa83..b759e457d99 100644
--- a/Buildings/Resources/Scripts/BuildingsPy/conf.yml
+++ b/Buildings/Resources/Scripts/BuildingsPy/conf.yml
@@ -61,6 +61,10 @@
     comment: simulation terminated by an assertion at initialization
     simulate: false
     time_out: 600
+- model_name: Buildings.Examples.VAVReheat.Validation.TraceSubstance
+  optimica:
+    comment: Process timeout after 300 s
+    time_out: 600
 - model_name: Buildings.Experimental.DHC.EnergyTransferStations.Combined.Validation.ChillerBorefield
   openmodelica:
     comment: Timeout on travis after 900 seconds, https://app.travis-ci.com/github/lbl-srg/modelica-buildings/jobs/615261271
@@ -201,6 +205,9 @@
     comment: simulation terminated by an assertion at initialization
     simulate: false
     time_out: 600
+  optimica:
+    comment: Process timeout after 300 s
+    time_out: 600
 - model_name: Buildings.Obsolete.Utilities.IO.Python36.Examples.KalmanFilter
   dymola:
     comment: Python 3.6 is not supported on Ubuntu 20.04, will be upgraded to more recent version