diff --git a/Manifest.toml b/Manifest.toml
index 1877fd4cc..a235dd97e 100644
--- a/Manifest.toml
+++ b/Manifest.toml
@@ -2101,7 +2101,7 @@ version = "3.6.5"
 deps = ["Accessors", "Arrow", "BasicModelInterface", "CodecZstd", "ComponentArrays", "Configurations", "DBInterface", "DataInterpolations", "DataStructures", "Dates", "DiffEqBase", "DiffEqCallbacks", "EnumX", "FiniteDiff", "Graphs", "HiGHS", "IterTools", "JuMP", "Legolas", "LineSearches", "LinearAlgebra", "LinearSolve", "Logging", "LoggingExtras", "MetaGraphsNext", "OrdinaryDiffEqBDF", "OrdinaryDiffEqCore", "OrdinaryDiffEqLowOrderRK", "OrdinaryDiffEqNonlinearSolve", "OrdinaryDiffEqRosenbrock", "OrdinaryDiffEqSDIRK", "OrdinaryDiffEqTsit5", "PreallocationTools", "SQLite", "SciMLBase", "SparseArrays", "SparseConnectivityTracer", "StructArrays", "Tables", "TerminalLoggers", "TranscodingStreams"]
 path = "core"
 uuid = "aac5e3d9-0b8f-4d4f-8241-b1a7a9632635"
-version = "2024.11.0"
+version = "2025.1.0"
 weakdeps = ["DataFrames", "Makie"]
 
     [deps.Ribasim.extensions]
diff --git a/build/cli/Cargo.lock b/build/cli/Cargo.lock
index 484bae57b..56357a9d7 100644
--- a/build/cli/Cargo.lock
+++ b/build/cli/Cargo.lock
@@ -144,7 +144,7 @@ dependencies = [
 
 [[package]]
 name = "ribasim"
-version = "2024.11.0"
+version = "2025.1.0"
 dependencies = [
  "clap",
  "libc",
diff --git a/build/cli/Cargo.toml b/build/cli/Cargo.toml
index da349088d..73a901138 100644
--- a/build/cli/Cargo.toml
+++ b/build/cli/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ribasim"
-version = "2024.11.0"
+version = "2025.1.0"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
diff --git a/core/Project.toml b/core/Project.toml
index 422e22e74..33fdf7f95 100644
--- a/core/Project.toml
+++ b/core/Project.toml
@@ -2,7 +2,7 @@ name = "Ribasim"
 uuid = "aac5e3d9-0b8f-4d4f-8241-b1a7a9632635"
 authors = ["Deltares and contributors <ribasim.info@deltares.nl>"]
 manifest = "../Manifest.toml"
-version = "2024.11.0"
+version = "2025.1.0"
 
 [deps]
 Accessors = "7d9f7c33-5ae7-4f3b-8dc6-eff91059b697"
diff --git a/core/test/data/config_test.toml b/core/test/data/config_test.toml
index 7f5353e32..cdbf757e9 100644
--- a/core/test/data/config_test.toml
+++ b/core/test/data/config_test.toml
@@ -3,7 +3,7 @@ endtime = 2019-12-31
 crs = "EPSG:28992"
 input_dir = "../../generated_testmodels/lhm"
 results_dir = "../../generated_testmodels/lhm"
-ribasim_version = "2024.11.0"
+ribasim_version = "2025.1.0"
 
 [basin]
 time = "basin/time.arrow"
diff --git a/core/test/data/logging_test_loglevel_debug.toml b/core/test/data/logging_test_loglevel_debug.toml
index 661661d9b..c0ecd68b0 100644
--- a/core/test/data/logging_test_loglevel_debug.toml
+++ b/core/test/data/logging_test_loglevel_debug.toml
@@ -3,7 +3,7 @@ endtime = 2019-12-31
 crs = "EPSG:28992"
 input_dir = "."
 results_dir = "results"
-ribasim_version = "2024.11.0"
+ribasim_version = "2025.1.0"
 
 [logging]
 verbosity = "debug"
diff --git a/core/test/data/logging_test_no_loglevel.toml b/core/test/data/logging_test_no_loglevel.toml
index 3f27121d2..4ecb56631 100644
--- a/core/test/data/logging_test_no_loglevel.toml
+++ b/core/test/data/logging_test_no_loglevel.toml
@@ -3,4 +3,4 @@ endtime = 2019-12-31
 crs = "EPSG:28992"
 input_dir = "."
 results_dir = "results"
-ribasim_version = "2024.11.0"
+ribasim_version = "2025.1.0"
diff --git a/core/test/docs.toml b/core/test/docs.toml
index 12c336535..927ab0178 100644
--- a/core/test/docs.toml
+++ b/core/test/docs.toml
@@ -12,7 +12,7 @@ crs = "EPSG:4326"      # required
 input_dir = "."         # required
 results_dir = "results" # required
 
-ribasim_version = "2024.11.0" # required
+ribasim_version = "2025.1.0" # required
 
 # Specific tables can also go into Arrow files rather than the database.
 # For large tables this can benefit from better compressed file sizes.
diff --git a/docs/changelog.qmd b/docs/changelog.qmd
index 373ab6cc8..875d4f23b 100644
--- a/docs/changelog.qmd
+++ b/docs/changelog.qmd
@@ -5,9 +5,36 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 
 ## [Unreleased]
 
+## [v2025.1.0] - 2025-01-17
+
+The first release of 2025 makes the Ribasim core more robust and stable, and speeds up
+initialization for large models. The biggest new feature is the experimental support for
+calculating tracers in Ribasim directly, which will hopefully make it easier to track where
+the water resources are heading.
+
+### Added
+- Remove Z coordinate on constructing Node in Python. [#1986](https://github.com/Deltares/Ribasim/pull/1986)
+- Add "Basin / subgrid_time" table. [#1975](https://github.com/Deltares/Ribasim/pull/1975)
+- Sign Ribasim binaries. [#2007](https://github.com/Deltares/Ribasim/pull/2007)
+- Experimental: Calculate tracer concentrations internally. [#1849](https://github.com/Deltares/Ribasim/pull/1849)
+- Document [parsing Delwaq results](https://ribasim.org/guide/delwaq). [#1845](https://github.com/Deltares/Ribasim/pull/1845)
+
+### Removed
+- Drop Python 3.10 support. [#2012](https://github.com/Deltares/Ribasim/pull/2012)
+
 ### Changed
+- Allocation: optimize per source. [#1927](https://github.com/Deltares/Ribasim/pull/1927)
 - The Edge table no longer supports `subnetwork_id`; this is automatically inferred. [#1956](https://github.com/Deltares/Ribasim/pull/1956)
 
+### Fixed
+- ManningResistance is more stable around Δh=0. [#1896](https://github.com/Deltares/Ribasim/pull/1896)
+- Fixes to Delwaq model generation. [#1903](https://github.com/Deltares/Ribasim/pull/1903) [#1917](https://github.com/Deltares/Ribasim/pull/1917) [#1948](https://github.com/Deltares/Ribasim/pull/1948)
+- Add step limiter to avoid negative flows or too large flows. [#1911](https://github.com/Deltares/Ribasim/pull/1911) [#1912](https://github.com/Deltares/Ribasim/pull/1912)
+- Fix README.md in builds. [#1935](https://github.com/Deltares/Ribasim/pull/1935) [#1938](https://github.com/Deltares/Ribasim/pull/1938)
+- Speed up initialization. [#1977](https://github.com/Deltares/Ribasim/pull/1977)
+- Automatically name index in Python. [#1974](https://github.com/Deltares/Ribasim/pull/1974)
+- Table sorting related fixes. [#2003](https://github.com/Deltares/Ribasim/pull/2003)
+
 ## [v2024.11.0] - 2024-10-08
 
 This major new release contains many improvements.
diff --git a/docs/dev/release.qmd b/docs/dev/release.qmd
index e2cec853e..3480eabad 100644
--- a/docs/dev/release.qmd
+++ b/docs/dev/release.qmd
@@ -17,6 +17,20 @@ This section provides a guide for developers to follow when preparing a new rele
 
 Before starting the release process, ensure that all tests are passing and that all features intended for the release are complete and merged into the main branch.
 
+## QGIS manual testing
+
+Our continuous integration (CI) should have caught most issues.
+A current weak spot in our testing is the QGIS plugin, so a manual test plan is in place.
+Start with running the automated task to see if it can be correctly installed.
+
+```sh
+# This test might give a fatal error on the first run, this is most likely a timing issue.
+# Try to run it again when that happens.
+pixi run test-ribasim-qgis-ui
+```
+
+Then follow the instructions as described in the [QGIS manual test plan](/dev/qgis_test_plan.qmd).
+
 ## Update version numbers of the components
 
 Determine the new version number like `2023.1.0`, filling in the current year, a bumped `MINOR` number for normal releases and a bumped `MICRO` number for non-breaking, hotfix releases.
@@ -84,20 +98,6 @@ In order to publish Ribasim Python or Ribasim API follow the following steps:
 
 2) Open a terminal and run `pixi run publish-ribasim-api`
 
-## QGIS manual testing
-
-Our continuous integration (CI) should have caught most issues.
-A current weak spot in our testing is the QGIS plugin, so a manual test plan is in place.
-Start with running the automated task to see if it can be correctly installed.
-
-```sh
-# This test might give a fatal error on the first run, this is most likely a timing issue.
-# Try to run it again when that happens.
-pixi run test-ribasim-qgis-ui
-```
-
-Then follow the instructions as described in the [QGIS manual test plan](/dev/qgis_test_plan.qmd).
-
 ## Announce release
 
 Announce the release in appropriate channels.
diff --git a/pixi.lock b/pixi.lock
index 1623c105e..c016d93f8 100644
--- a/pixi.lock
+++ b/pixi.lock
@@ -21908,7 +21908,7 @@ packages:
   timestamp: 1598024297745
 - pypi: python/ribasim
   name: ribasim
-  version: 2024.11.0
+  version: 2025.1.0
   sha256: bc76f0d6b28e203efbaa6ced5c6e7c542e2304e784989ec6c3152a516cd1c041
   requires_dist:
   - geopandas>=1.0
@@ -21943,7 +21943,7 @@ packages:
   editable: true
 - pypi: python/ribasim_api
   name: ribasim-api
-  version: 2024.11.0
+  version: 2025.1.0
   sha256: 73658444714bf6027302b5bf1ec3da2cad1a265d8d1e3c0f4dcb9a17c02b704c
   requires_dist:
   - xmipy>=1.3
diff --git a/pixi.toml b/pixi.toml
index a009d17eb..ff91bc92b 100644
--- a/pixi.toml
+++ b/pixi.toml
@@ -1,6 +1,6 @@
 [project]
 name = "Ribasim"
-version = "2024.11.0"
+version = "2025.1.0"
 description = "Water resources modeling"
 authors = ["Deltares and contributors <ribasim.info@deltares.nl>"]
 channels = ["conda-forge"]
diff --git a/python/ribasim/ribasim/__init__.py b/python/ribasim/ribasim/__init__.py
index 9deb0099f..9f3c41138 100644
--- a/python/ribasim/ribasim/__init__.py
+++ b/python/ribasim/ribasim/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "2024.11.0"
+__version__ = "2025.1.0"
 # Keep synced write_schema_version in ribasim_qgis/core/geopackage.py
 __schema_version__ = 3
 
diff --git a/python/ribasim_api/ribasim_api/__init__.py b/python/ribasim_api/ribasim_api/__init__.py
index bf12dd287..de7e50546 100644
--- a/python/ribasim_api/ribasim_api/__init__.py
+++ b/python/ribasim_api/ribasim_api/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "2024.11.0"
+__version__ = "2025.1.0"
 
 from ribasim_api.ribasim_api import RibasimApi
 
diff --git a/ribasim_qgis/core/nodes.py b/ribasim_qgis/core/nodes.py
index d2274b3ee..058f96328 100644
--- a/ribasim_qgis/core/nodes.py
+++ b/ribasim_qgis/core/nodes.py
@@ -609,6 +609,25 @@ def attributes(cls) -> list[QgsField]:
         ]
 
 
+class LevelBoundaryConcentration(Input):
+    @classmethod
+    def input_type(cls) -> str:
+        return "LevelBoundary / concentration"
+
+    @classmethod
+    def geometry_type(cls) -> str:
+        return "No Geometry"
+
+    @classmethod
+    def attributes(cls) -> list[QgsField]:
+        return [
+            QgsField("node_id", QVariant.Int),
+            QgsField("time", QVariant.DateTime),
+            QgsField("substance", QVariant.String),
+            QgsField("concentration", QVariant.Double),
+        ]
+
+
 class PumpStatic(Input):
     @classmethod
     def input_type(cls) -> str:
@@ -688,6 +707,25 @@ def attributes(cls) -> list[QgsField]:
         ]
 
 
+class FlowBoundaryConcentration(Input):
+    @classmethod
+    def input_type(cls) -> str:
+        return "FlowBoundary / concentration"
+
+    @classmethod
+    def geometry_type(cls) -> str:
+        return "No Geometry"
+
+    @classmethod
+    def attributes(cls) -> list[QgsField]:
+        return [
+            QgsField("node_id", QVariant.Int),
+            QgsField("time", QVariant.DateTime),
+            QgsField("substance", QVariant.String),
+            QgsField("concentration", QVariant.Double),
+        ]
+
+
 class DiscreteControlVariable(Input):
     @classmethod
     def input_type(cls) -> str:
@@ -868,6 +906,25 @@ def attributes(cls) -> list[QgsField]:
         ]
 
 
+class UserDemandConcentration(Input):
+    @classmethod
+    def input_type(cls) -> str:
+        return "UserDemand / concentration"
+
+    @classmethod
+    def geometry_type(cls) -> str:
+        return "No Geometry"
+
+    @classmethod
+    def attributes(cls) -> list[QgsField]:
+        return [
+            QgsField("node_id", QVariant.Int),
+            QgsField("time", QVariant.DateTime),
+            QgsField("substance", QVariant.String),
+            QgsField("concentration", QVariant.Double),
+        ]
+
+
 class LevelDemandStatic(Input):
     @classmethod
     def input_type(cls) -> str:
diff --git a/ribasim_qgis/metadata.txt b/ribasim_qgis/metadata.txt
index e8ee3ce45..169d8cb74 100644
--- a/ribasim_qgis/metadata.txt
+++ b/ribasim_qgis/metadata.txt
@@ -7,7 +7,7 @@
 name=Ribasim
 qgisMinimumVersion=3.34
 description=QGIS plugin to setup Ribasim models
-version=2024.11.0
+version=2025.1.0
 author=Deltares and contributors
 email=ribasim.info@deltares.nl
 
diff --git a/ribasim_qgis/tests/data/simple_valid.toml b/ribasim_qgis/tests/data/simple_valid.toml
index 443dbadff..481c22638 100644
--- a/ribasim_qgis/tests/data/simple_valid.toml
+++ b/ribasim_qgis/tests/data/simple_valid.toml
@@ -3,4 +3,4 @@ endtime = 2021-01-01 00:00:00
 crs = "EPSG:28992"
 input_dir = "."
 results_dir = "results"
-ribasim_version = "2024.11.0"
+ribasim_version = "2025.1.0"
diff --git a/ribasim_qgis/widgets/dataset_widget.py b/ribasim_qgis/widgets/dataset_widget.py
index 079fad59f..3959f862d 100644
--- a/ribasim_qgis/widgets/dataset_widget.py
+++ b/ribasim_qgis/widgets/dataset_widget.py
@@ -77,7 +77,7 @@ def remove_geopackage_layers(self) -> None:
         selection = self.selectedItems()
 
         # Warn before deletion
-        message = "\n".join([f"- {item.text(1)}" for item in selection])
+        message = "\n".join([f"- {item.text(0)}" for item in selection])
         reply = QMessageBox.question(
             self,
             "Deleting from Geopackage",
@@ -337,7 +337,7 @@ def _write_toml(self) -> None:
                     f'crs = "{self.ribasim_widget.crs.authid()}"\n',
                     'input_dir = "."\n',
                     'results_dir = "results"\n',
-                    'ribasim_version = "2024.11.0"\n',
+                    'ribasim_version = "2025.1.0"\n',
                 ]
             )