diff --git a/.CI/Jenkinsfile b/.CI/Jenkinsfile
index eda8bc8..0619056 100644
--- a/.CI/Jenkinsfile
+++ b/.CI/Jenkinsfile
@@ -3,20 +3,20 @@ pipeline {
   parameters {
     booleanParam(name: 'OLDLIBS', defaultValue: false, description: 'Also test some outdated libraries')
 
-    booleanParam(name: 'v1_24', defaultValue: false, description: 'maintenance/v1.24 branch (ryzen-5950x-1)')
     booleanParam(name: 'v1_25', defaultValue: false, description: 'maintenance/v1.25 branch (ryzen-5950x-1)')
+    booleanParam(name: 'v1_26', defaultValue: false, description: 'maintenance/v1.26 branch (ryzen-5950x-1)')
     booleanParam(name: 'master', defaultValue: false, description: 'master branch (ryzen-5950x-1)')
 
-    booleanParam(name: 'fmi_v1_24', defaultValue: false, description: 'maintenance/v1.24 branch with FMI (ryzen-5950x-2)')
     booleanParam(name: 'fmi_v1_25', defaultValue: false, description: 'maintenance/v1.25 branch with FMI (ryzen-5950x-2)')
+    booleanParam(name: 'fmi_v1_26', defaultValue: false, description: 'maintenance/v1.26 branch with FMI (ryzen-5950x-2)')
     booleanParam(name: 'fmi_master', defaultValue: false, description: 'master branch with FMI running OMSimulator (ryzen-5950x-2)')
 
-    booleanParam(name: 'cs_fmu_cvode_v1_24', defaultValue: false, description: 'maintenance/v1.24 branch with CVODE CS FMUs running OMSimulator (ryzen-5950x-2)')
     booleanParam(name: 'cs_fmu_cvode_v1_25', defaultValue: false, description: 'maintenance/v1.25 branch with CVODE CS FMUs running OMSimulator (ryzen-5950x-2)')
+    booleanParam(name: 'cs_fmu_cvode_v1_26', defaultValue: false, description: 'maintenance/v1.26 branch with CVODE CS FMUs running OMSimulator (ryzen-5950x-2)')
     booleanParam(name: 'cs_fmu_cvode_master', defaultValue: false, description: 'master branch with CVODE CS FMUs running OMSimulator (ryzen-5950x-2)')
 
-    booleanParam(name: 'fmpy_fmi_v1_24', defaultValue: false, description: 'maintenance/v1.24 branch with FMI (ryzen-5950x-2)')
     booleanParam(name: 'fmpy_fmi_v1_25', defaultValue: false, description: 'maintenance/v1.25 branch with FMI (ryzen-5950x-2)')
+    booleanParam(name: 'fmpy_fmi_v1_26', defaultValue: false, description: 'maintenance/v1.26 branch with FMI (ryzen-5950x-2)')
     booleanParam(name: 'fmpy_fmi_master', defaultValue: false, description: 'master branch with FMI running FMPy (ryzen-5950x-2)')
 
     booleanParam(name: 'newInst_daeMode', defaultValue: false, description: 'master branch, --daeMode with -d=newInst (ryzen-5950x-2)')
@@ -24,8 +24,8 @@ pipeline {
     booleanParam(name: 'newBackend_daeMode', defaultValue: false, description: 'master branch, --newBackend --daeMode with -d=newInst (ryzen-5950x-2). This is an experimental job that does not run on a fixed schedule.')
     booleanParam(name: 'oldInst', defaultValue: false, description: 'master branch, with -d=nonewInst (ryzen-5950x-2)')
 
-    booleanParam(name: 'cpp_v1_24', defaultValue: false, description: 'maintenance/v1.24 branch, with --simCodeTarget=Cpp (ryzen-5950x-2).')
     booleanParam(name: 'cpp_v1_25', defaultValue: false, description: 'maintenance/v1.25 branch, with --simCodeTarget=Cpp (ryzen-5950x-2).')
+    booleanParam(name: 'cpp_v1_26', defaultValue: false, description: 'maintenance/v1.26 branch, with --simCodeTarget=Cpp (ryzen-5950x-2).')
     booleanParam(name: 'cpp', defaultValue: false, description: 'master branch, with --simCodeTarget=Cpp (ryzen-5950x-2).')
     booleanParam(name: 'report_ryzen_5950x_1', defaultValue: false, description: 'Generate a report for ryzen-5950x-1 without running the tests')
     booleanParam(name: 'report_ryzen_5950x_2', defaultValue: false, description: 'Generate a report for ryzen-5950x-2 without running the tests')
@@ -45,7 +45,7 @@ pipeline {
   stages {
     stage('test') { parallel {
 
-      stage('v1.24') {
+      stage('v1.25') {
         agent {
           node {
             label 'ryzen-5950x-1'
@@ -55,14 +55,14 @@ pipeline {
         options { skipDefaultCheckout() }
         when {
           beforeAgent true
-          expression { params.v1_24 }
+          expression { params.v1_25 }
         }
         steps {
-          runRegressiontest('maintenance/v1.24', 'v1.24', '', '', 'ripper1', 'LibraryTestingRipper1DB', false, '', false, false)
+          runRegressiontest('maintenance/v1.25', 'v1.25', '', '', 'ripper1', 'LibraryTestingRipper1DB', false, '', false, false)
         }
       }
 
-      stage('v1.25') {
+      stage('v1.26') {
         agent {
           node {
             label 'ryzen-5950x-1'
@@ -72,10 +72,10 @@ pipeline {
         options { skipDefaultCheckout() }
         when {
           beforeAgent true
-          expression { params.v1_25 }
+          expression { params.v1_26 }
         }
         steps {
-          runRegressiontest('maintenance/v1.25', 'v1.25', '', '', 'ripper1', 'LibraryTestingRipper1DB', false, '', false, false)
+          runRegressiontest('maintenance/v1.26', 'v1.26', '', '', 'ripper1', 'LibraryTestingRipper1DB', false, '', false, false)
         }
       }
 
@@ -130,7 +130,7 @@ pipeline {
         }
       }
 
-      stage('v1.24 FMI with OMSimulator') {
+      stage('v1.25 FMI with OMSimulator') {
         agent {
           node {
             label 'ryzen-5950x-2-1'
@@ -140,13 +140,13 @@ pipeline {
         options { skipDefaultCheckout() }
         when {
           beforeAgent true
-          expression { params.fmi_v1_24 }
+          expression { params.fmi_v1_25 }
         }
         steps {
-          runRegressiontest('maintenance/v1.24', 'v1.24-fmi', '', omsimulatorHash(), 'ripper2', 'LibraryTestingRipper2DB', false, '', false, false)
+          runRegressiontest('maintenance/v1.25', 'v1.25-fmi', '', omsimulatorHash(), 'ripper2', 'LibraryTestingRipper2DB', false, '', false, false)
         }
       }
-      stage('v1.25 FMI with OMSimulator') {
+      stage('v1.26 FMI with OMSimulator') {
         agent {
           node {
             label 'ryzen-5950x-2-1'
@@ -156,10 +156,10 @@ pipeline {
         options { skipDefaultCheckout() }
         when {
           beforeAgent true
-          expression { params.fmi_v1_25 }
+          expression { params.fmi_v1_26 }
         }
         steps {
-          runRegressiontest('maintenance/v1.25', 'v1.25-fmi', '', omsimulatorHash(), 'ripper2', 'LibraryTestingRipper2DB', false, '', false, false)
+          runRegressiontest('maintenance/v1.26', 'v1.26-fmi', '', omsimulatorHash(), 'ripper2', 'LibraryTestingRipper2DB', false, '', false, false)
         }
       }
       stage('master FMI with OMSimulator') {
@@ -179,7 +179,7 @@ pipeline {
         }
       }
 
-      stage('v1.24 CVODE CS-FMUs with OMSimulator') {
+      stage('v1.25 CVODE CS-FMUs with OMSimulator') {
         agent {
           node {
             label 'ryzen-5950x-2-1'
@@ -189,13 +189,13 @@ pipeline {
         options { skipDefaultCheckout() }
         when {
           beforeAgent true
-          expression { params.cs_fmu_cvode_v1_24 }
+          expression { params.cs_fmu_cvode_v1_25 }
         }
         steps {
-          runRegressiontest('maintenance/v1.24', 'v1.24-cs-fmu-cvode', 'setCommandLineOptions("--fmiFlags=s:cvode --fmuRuntimeDepends=modelica")', omsimulatorHash(), 'ripper2', 'LibraryTestingRipper2DB', false, '', false, false)
+          runRegressiontest('maintenance/v1.25', 'v1.25-cs-fmu-cvode', 'setCommandLineOptions("--fmiFlags=s:cvode --fmuRuntimeDepends=modelica")', omsimulatorHash(), 'ripper2', 'LibraryTestingRipper2DB', false, '', false, false)
         }
       }
-      stage('v1.25 CVODE CS-FMUs with OMSimulator') {
+      stage('v1.26 CVODE CS-FMUs with OMSimulator') {
         agent {
           node {
             label 'ryzen-5950x-2-1'
@@ -205,10 +205,10 @@ pipeline {
         options { skipDefaultCheckout() }
         when {
           beforeAgent true
-          expression { params.cs_fmu_cvode_v1_25 }
+          expression { params.cs_fmu_cvode_v1_26 }
         }
         steps {
-          runRegressiontest('maintenance/v1.25', 'v1.25-cs-fmu-cvode', 'setCommandLineOptions("--fmiFlags=s:cvode --fmuRuntimeDepends=modelica")', omsimulatorHash(), 'ripper2', 'LibraryTestingRipper2DB', false, '', false, false)
+          runRegressiontest('maintenance/v1.26', 'v1.26-cs-fmu-cvode', 'setCommandLineOptions("--fmiFlags=s:cvode --fmuRuntimeDepends=modelica")', omsimulatorHash(), 'ripper2', 'LibraryTestingRipper2DB', false, '', false, false)
         }
       }
       stage('master CVODE CS-FMUs with OMSimulator') {
@@ -228,7 +228,7 @@ pipeline {
         }
       }
 
-      stage('v1.24 FMI with FMPy') {
+      stage('v1.25 FMI with FMPy') {
         agent {
           node {
             label 'ryzen-5950x-2-1'
@@ -238,13 +238,14 @@ pipeline {
         options { skipDefaultCheckout() }
         when {
           beforeAgent true
-          expression { params.fmpy_fmi_v1_24 }
+          expression { params.fmpy_fmi_v1_25 }
         }
         steps {
-          runRegressiontest('maintenance/v1.24', 'v1.24-fmi-fmpy', '', omsimulatorHash(), 'ripper2', 'LibraryTestingRipper2DB', false, '', false, false)
+          runRegressiontest('maintenance/v1.25', 'v1.25-fmi-fmpy', '', omsimulatorHash(), 'ripper2', 'LibraryTestingRipper2DB', false, '', false, false)
         }
       }
-      stage('v1.25 FMI with FMPy') {
+
+      stage('v1.26 FMI with FMPy') {
         agent {
           node {
             label 'ryzen-5950x-2-1'
@@ -254,12 +255,13 @@ pipeline {
         options { skipDefaultCheckout() }
         when {
           beforeAgent true
-          expression { params.fmpy_fmi_v1_25 }
+          expression { params.fmpy_fmi_v1_26 }
         }
         steps {
-          runRegressiontest('maintenance/v1.25', 'v1.25-fmi-fmpy', '', omsimulatorHash(), 'ripper2', 'LibraryTestingRipper2DB', false, '', false, false)
+          runRegressiontest('maintenance/v1.26', 'v1.26-fmi-fmpy', '', omsimulatorHash(), 'ripper2', 'LibraryTestingRipper2DB', false, '', false, false)
         }
       }
+
       stage('master FMI with FMPy') {
         agent {
           node {
@@ -423,7 +425,7 @@ pipeline {
         }
       }
 
-      stage('C++ v1.24') {
+      stage('C++ v1.25') {
         agent {
           node {
             label 'ryzen-5950x-2-1'
@@ -433,13 +435,13 @@ pipeline {
         options { skipDefaultCheckout() }
         when {
           beforeAgent true
-          expression { params.cpp_v1_24 }
+          expression { params.cpp_v1_25 }
         }
         steps {
-          runRegressiontest('maintenance/v1.24', 'v1.24-cpp', 'setCommandLineOptions("--simCodeTarget=Cpp")', '', 'ripper2', 'LibraryTestingRipper2DB', false, '', false, false)
+          runRegressiontest('maintenance/v1.25', 'v1.25-cpp', 'setCommandLineOptions("--simCodeTarget=Cpp")', '', 'ripper2', 'LibraryTestingRipper2DB', false, '', false, false)
         }
       }
-      stage('C++ v1.25') {
+      stage('C++ v1.26') {
         agent {
           node {
             label 'ryzen-5950x-2-1'
@@ -449,12 +451,13 @@ pipeline {
         options { skipDefaultCheckout() }
         when {
           beforeAgent true
-          expression { params.cpp_v1_25 }
+          expression { params.cpp_v1_26 }
         }
         steps {
-          runRegressiontest('maintenance/v1.25', 'v1.25-cpp', 'setCommandLineOptions("--simCodeTarget=Cpp")', '', 'ripper2', 'LibraryTestingRipper2DB', false, '', false, false)
+          runRegressiontest('maintenance/v1.26', 'v1.26-cpp', 'setCommandLineOptions("--simCodeTarget=Cpp")', '', 'ripper2', 'LibraryTestingRipper2DB', false, '', false, false)
         }
       }
+
       stage('C++') {
         agent {
           node {
@@ -484,10 +487,10 @@ pipeline {
         }
         when {
           beforeAgent true
-          expression { params.v1_23 || params.v1_24 || params.master || params.conversion_script || params.report_ryzen_5950x_1 | params.newInst_newBackend || params.generateSymbolicJacobian || params.heavy_tests}
+          expression { params.v1_25 || params.v1_26 || params.master || params.conversion_script || params.report_ryzen_5950x_1 | params.newInst_newBackend || params.generateSymbolicJacobian || params.heavy_tests}
         }
         environment {
-          GITBRANCHES = 'maintenance/v1.12 maintenance/v1.13 maintenance/v1.14 maintenance/v1.16 maintenance/v1.17 maintenance/v1.18 maintenance/v1.19 maintenance/v1.20 maintenance/v1.21 maintenance/v1.22 maintenance/v1.23 maintenance/v1.24 maintenance/v1.25 master newInst-newBackend'
+          GITBRANCHES = 'maintenance/v1.20 maintenance/v1.21 maintenance/v1.22 maintenance/v1.23 maintenance/v1.24 maintenance/v1.25 maintenance/v1.26 master newInst-newBackend'
           PYTHONIOENCODING = 'utf-8'
           IDA_EMAIL = credentials('IDA email')
         }
@@ -546,14 +549,14 @@ pipeline {
         }
         when {
           beforeAgent true
-          expression { params.fmi_v1_24 || params.fmi_v1_25 || params.fmi_master || params.fmpy_fmi_v1_24 || params.fmpy_fmi_v1_25 || params.fmpy_fmi_master || params.newInst_daeMode || params.newBackend_daeMode || params.oldInst || params.report_ryzen_5950x_2 || params.cpp || params.cvode || params.gbode || params.ida}
+          expression { params.fmi_v1_25 || params.fmi_v1_26 || params.fmi_master || params.fmpy_fmi_v1_25 || params.fmpy_fmi_v1_26 || params.fmpy_fmi_master || params.newInst_daeMode || params.newBackend_daeMode || params.oldInst || params.report_ryzen_5950x_2 || params.cpp || params.cvode || params.gbode || params.ida}
         }
         environment {
-          GITBRANCHES_FMI = 'maintenance/v1.12-fmi maintenance/v1.13-fmi maintenance/v1.14-fmi maintenance/v1.16-fmi maintenance/v1.17-fmi maintenance/v1.18-fmi maintenance/v1.19-fmi maintenance/v1.20-fmi maintenance/v1.21-fmi maintenance/v1.22-fmi maintenance/v1.23-fmi maintenance/v1.24-fmi maintenance/v1.25-fmi maintenance/v1.22-fmi-fmpy maintenance/v1.23-fmi-fmpy maintenance/v1.24-fmi-fmpy maintenance/v1.25-fmi-fmpy master-fmi master-fmi-fmpy'
+          GITBRANCHES_FMI = 'maintenance/v1.20-fmi maintenance/v1.21-fmi maintenance/v1.22-fmi maintenance/v1.23-fmi maintenance/v1.24-fmi maintenance/v1.25-fmi maintenance/v1.26-fmi maintenance/v1.22-fmi-fmpy maintenance/v1.23-fmi-fmpy maintenance/v1.24-fmi-fmpy maintenance/v1.25-fmi-fmpy maintenance/v1.26-fmi-fmpy master-fmi master-fmi-fmpy'
           GITBRANCHES_NEWINST = 'oldInst'
           GITBRANCHES_DAE = 'newInst-daeMode'
           GITBRANCHES_NEWBACKEND_DAE = 'newBackend-daeMode'
-          GITBRANCHES_CPP = 'v1.19-cpp v1.20-cpp v1.21-cpp v1.22-cpp v1.23-cpp v1.24-cpp v1.25-cpp cpp'
+          GITBRANCHES_CPP = 'v1.19-cpp v1.20-cpp v1.21-cpp v1.22-cpp v1.23-cpp v1.24-cpp v1.25-cpp cpp v1.26-cpp cpp'
           PYTHONIOENCODING = 'utf-8'
           IDA_EMAIL = credentials('IDA email')
         }