diff --git a/Dockerfile b/Dockerfile
index 63e43c2..60e5b67 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,8 @@
-FROM osgeo/gdal:ubuntu-small-3.4.1
+# Base image with:
+# - Ubuntu 22.04
+# - Python 3.10.12
+# - GDAL 3.7.3, released 2023/10/30
+FROM ghcr.io/osgeo/gdal:ubuntu-small-3.7.3
 
 ENV DEBIAN_FRONTEND=noninteractive \
     LC_ALL=C.UTF-8 \
@@ -15,7 +19,7 @@ RUN apt-get update && \
       wget \
       unzip \
       python3-pip \
-      libpq-dev python-dev \
+      libpq-dev \
     && apt-get autoclean && \
     apt-get autoremove && \
     rm -rf /var/lib/{apt,dpkg,cache,log}
diff --git a/tests/README.md b/tests/README.md
index 6a95f22..29d5255 100644
--- a/tests/README.md
+++ b/tests/README.md
@@ -10,7 +10,7 @@ Integration tests
 
 This directory contains tests that are run to verify that DEA Intertidal code runs correctly. The ``test_intertidal.py`` file runs a small-scale full workflow analysis over an intertidal flat in the Gulf of Carpentaria using the DEA Intertidal [Command Line Interface (CLI) tools](../notebooks/Intertidal_CLI.ipynb), and compares these results against a LiDAR validation DEM to produce some simple accuracy metrics.
 
-The latest integration test completed at **2024-03-04 15:35**. Compared to the previous run, it had an:
+The latest integration test completed at **2024-03-05 14:05**. Compared to the previous run, it had an:
 - RMSE accuracy of **0.14 m ( :heavy_minus_sign: no change)**
 - MAE accuracy of **0.12 m ( :heavy_minus_sign: no change)**
 - Bias of **0.12 m ( :heavy_minus_sign: no change)**
diff --git a/tests/validation.csv b/tests/validation.csv
index e10fa05..2905ab5 100644
--- a/tests/validation.csv
+++ b/tests/validation.csv
@@ -38,3 +38,5 @@ time,Correlation,RMSE,MAE,R-squared,Bias,Regression slope
 2024-03-04 02:24:13.813543+00:00,0.976,0.141,0.121,0.952,0.117,1.109
 2024-03-04 02:57:33.436682+00:00,0.976,0.141,0.121,0.952,0.117,1.109
 2024-03-04 04:35:38.183061+00:00,0.976,0.141,0.121,0.952,0.117,1.109
+2024-03-05 02:40:05.059383+00:00,0.976,0.141,0.121,0.952,0.117,1.109
+2024-03-05 03:05:39.133155+00:00,0.976,0.141,0.121,0.952,0.117,1.109
diff --git a/tests/validation.jpg b/tests/validation.jpg
index 67701cf..6f528bc 100644
Binary files a/tests/validation.jpg and b/tests/validation.jpg differ