diff --git a/CHANGELOG.md b/CHANGELOG.md
index 79d06444ff..91a606760d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [UNRELEASED] - YYYY-MM-DD
 ### Changed
 - [#612](https://github.com/equinor/webviz-subsurface/pull/612) - New features in ReservoirSimulationTimeSeries: Statistical lines, option to remove history trace, histogram available when plotting individual realizations.
+- [#618](https://github.com/equinor/webviz-subsurface/pull/618) - Added deprecation warning to `HorizonUncertaintyViewer`, 
+`WellCrossSection` and `WellCrossSectionFMU`. These plugins will soon be removed. Relevant functionality is implememented
+in the new `StructuralUncertainty` plugin.
+
 
 ### Fixed
 - [#615](https://github.com/equinor/webviz-subsurface/pull/615) - Improve table performance of AssistedHistoryMatchingAnalysis.
diff --git a/setup.py b/setup.py
index 0fc784bfd7..15521346d2 100644
--- a/setup.py
+++ b/setup.py
@@ -75,7 +75,7 @@
         "pyscal>=0.7.5",
         "scipy>=1.2",
         "statsmodels>=0.12.1",  # indirect dependency through https://plotly.com/python/linear-fits/
-        "webviz-config>=0.2.7",
+        "webviz-config>=0.3.0",
         "webviz-subsurface-components>=0.3.0",
         "xtgeo>=2.14",
     ],
diff --git a/webviz_subsurface/plugins/_horizon_uncertainty_viewer/horizon_uncertainty_viewer.py b/webviz_subsurface/plugins/_horizon_uncertainty_viewer/horizon_uncertainty_viewer.py
index b16b4ad80e..44aca43a44 100644
--- a/webviz_subsurface/plugins/_horizon_uncertainty_viewer/horizon_uncertainty_viewer.py
+++ b/webviz_subsurface/plugins/_horizon_uncertainty_viewer/horizon_uncertainty_viewer.py
@@ -21,6 +21,7 @@
 from webviz_config import WebvizPluginABC
 from webviz_config import WebvizSettings
 from webviz_config.webviz_store import webvizstore
+from webviz_config.deprecation_decorators import deprecated_plugin
 
 import webviz_subsurface
 from webviz_subsurface._models import SurfaceLeafletModel
@@ -29,6 +30,10 @@
 from ._huv_table import FilterTable
 
 
+@deprecated_plugin(
+    "This plugin will soon be deprecated. "
+    "Relevant functionality is implemented in the StructuralUncertainty plugin."
+)
 class HorizonUncertaintyViewer(WebvizPluginABC):
     """Visualizes depth uncertainty for surfaces in map view and cross section view.
 
diff --git a/webviz_subsurface/plugins/_well_cross_section.py b/webviz_subsurface/plugins/_well_cross_section.py
index 3250c020d8..a25864174e 100644
--- a/webviz_subsurface/plugins/_well_cross_section.py
+++ b/webviz_subsurface/plugins/_well_cross_section.py
@@ -11,6 +11,7 @@
 from webviz_subsurface_components import LeafletMap
 from webviz_config import WebvizPluginABC
 from webviz_config.webviz_store import webvizstore
+from webviz_config.deprecation_decorators import deprecated_plugin
 
 from webviz_subsurface._models import SurfaceLeafletModel
 from .._datainput.xsection import XSectionFigure
@@ -19,6 +20,10 @@
 from .._datainput.surface import load_surface
 
 
+@deprecated_plugin(  # type: ignore
+    "This plugin will soon be deprecated. "
+    "Relevant functionality is implemented in the StructuralUncertainty plugin."
+)
 class WellCrossSection(WebvizPluginABC):
     """Displays a cross section along a well with intersected surfaces,
 and optionally seismic cubes.
diff --git a/webviz_subsurface/plugins/_well_cross_section_fmu.py b/webviz_subsurface/plugins/_well_cross_section_fmu.py
index 316b24e2ba..53e21f5a3a 100644
--- a/webviz_subsurface/plugins/_well_cross_section_fmu.py
+++ b/webviz_subsurface/plugins/_well_cross_section_fmu.py
@@ -19,6 +19,7 @@
 from webviz_config import WebvizSettings
 from webviz_config.webviz_store import webvizstore
 from webviz_config.common_cache import CACHE
+from webviz_config.deprecation_decorators import deprecated_plugin
 
 from webviz_subsurface._models import SurfaceLeafletModel
 from .._datainput.fmu_input import get_realizations
@@ -27,6 +28,10 @@
 from .._datainput.well import load_well
 
 # pylint: disable=too-many-instance-attributes
+@deprecated_plugin(  # type: ignore
+    "This plugin will soon be deprecated. "
+    "Relevant functionality is implemented in the StructuralUncertainty plugin."
+)
 class WellCrossSectionFMU(WebvizPluginABC):
     """Well cross-section displaying statistical surfaces from a FMU ensemble.