diff --git a/Dockerfiles/backend.Dockerfile b/Dockerfiles/backend.Dockerfile
index a98474321..6b0d639b0 100644
--- a/Dockerfiles/backend.Dockerfile
+++ b/Dockerfiles/backend.Dockerfile
@@ -49,7 +49,12 @@ ENV PYTHONPATH /code
 ###################
 FROM base as test
 RUN pip3 install -r /code/tests/requirements-test.txt
-RUN apk add mariadb-client
+
+# The version of mariadb-client should match the version of the mariadb server
+# Because of how alpine works, this is how to pin a version. However, it can break if this branch is removed from alpine
+# https://superuser.com/questions/1055060/how-to-install-a-specific-package-version-in-alpine
+# https://pkgs.alpinelinux.org/packages?name=mariadb-client&branch=v3.19&repo=&arch=x86_64&origin=&flagged=&maintainer=
+RUN apk add mariadb-client=~10.11 --repository https://dl-cdn.alpinelinux.org/alpine/v3.19/main/
 
 # Switch to the user
 USER $USERNAME
diff --git a/SPRINTLOG.md b/SPRINTLOG.md
index 05c86da58..3fd3ce53f 100644
--- a/SPRINTLOG.md
+++ b/SPRINTLOG.md
@@ -464,3 +464,4 @@ _Nothing merged during this sprint_
 - Change the error raised upon attempt to download data after a password reset to an AuthenticationError to avoid getting an alert ([#1571](https://github.com/ScilifelabDataCentre/dds_web/pull/1571))
 - Filter out the MaintenanceModeException from the logs ([#1573](https://github.com/ScilifelabDataCentre/dds_web/pull/1573))
 - Bugfix: Quick and dirty change to prevent `dds ls --tree` from failing systematically ([#1575](https://github.com/ScilifelabDataCentre/dds_web/pull/1575)
+- Update backend Dockerfile to pin a fixed version of mariadb-client ([#1581](https://github.com/ScilifelabDataCentre/dds_web/pull/1581)
diff --git a/tests/conftest.py b/tests/conftest.py
index a9d05709b..608c40032 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -103,9 +103,25 @@ def fill_basic_db(db):
 def new_test_db(uri):
     dbname = uri[uri.rindex("/") + 1 :]
     dbname_base = DATABASE_URI_BASE[DATABASE_URI_BASE.rindex("/") + 1 :]
-    dump_args = ["mysqldump", "-h", "db", "-u", "root", f"-p{mysql_root_password}", dbname_base]
-    load_args = ["mysql", "-h", "db", "-u", "root", f"-p{mysql_root_password}", dbname]
-    proc1 = subprocess.run(dump_args, capture_output=True)
+    dump_args = [
+        "mariadb-dump",
+        "-h",
+        "db",
+        "-u",
+        "root",
+        f"-p{mysql_root_password}",
+        dbname_base,
+    ]
+    load_args = [
+        "mariadb",
+        "-h",
+        "db",
+        "-u",
+        "root",
+        f"-p{mysql_root_password}",
+        dbname,
+    ]
+
     proc1 = subprocess.run(dump_args, stdout=subprocess.PIPE)
     proc2 = subprocess.run(load_args, input=proc1.stdout, capture_output=True)