diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d9670e1..3c042b5 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -26,7 +26,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ckan-version: ['2.10', 2.9]
+        ckan-version: ['2.10']
         solr-version: ['8']
         experimental: [false]
         include:
diff --git a/bin/build.sh b/bin/build.sh
index 0180ffe..23f9be0 100755
--- a/bin/build.sh
+++ b/bin/build.sh
@@ -24,8 +24,6 @@ if [ "$CKAN_VERSION" = "2.11" ]; then
     CKAN_GIT_VERSION=ckan-2.11.1-qgov.2
 elif [ "$CKAN_VERSION" = "2.10" ]; then
     CKAN_GIT_VERSION=ckan-2.10.5-qgov.5
-elif [ "$CKAN_VERSION" = "2.9" ]; then
-    CKAN_GIT_VERSION=ckan-2.9.9-qgov.4
 elif [ "$CKAN_VERSION" = "master" ]; then
     CKAN_GIT_ORG=ckan
 fi
diff --git a/dev-requirements-2.9.txt b/dev-requirements-2.9.txt
deleted file mode 100644
index 19a2ee1..0000000
--- a/dev-requirements-2.9.txt
+++ /dev/null
@@ -1,18 +0,0 @@
-behaving==3.1.5
-Appium-Python-Client==2.10.1
-ckanapi==4.3
-ckantoolkit>=0.0.4
-factory-boy
-flake8==6.0.0
-mock
-pytest-ckan
-requests>=2.32.0 # not directly required, pinned by Snyk to avoid a vulnerability
-selenium<4.10
-six>=1.13.0
-urllib3>=2.2.2 # not directly required, pinned by Snyk to avoid a vulnerability
-zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability
-
--e git+https://github.com/qld-gov-au/ckanext-csrf-filter.git@2.0.0#egg=ckanext-csrf-filter
--e git+https://github.com/qld-gov-au/ckanext-qgov.git@6.0.4#egg=ckanext-qgov
--e git+https://github.com/qld-gov-au/ckanext-resource-type-validation.git@1.0.10#egg=ckanext-resource-type-validation
--e git+https://github.com/qld-gov-au/ckanext-ssm-config.git@0.1.0#egg=ckanext-ssm-config