diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7e96e98..c1137fa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased](https://github.com/nationalarchives/docker/compare/v1.25.0...HEAD)
+## [Unreleased](https://github.com/nationalarchives/docker/compare/v1.26.0...HEAD)
 
 ### Added
 ### Changed
@@ -14,6 +14,17 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 ### Security
 
+## [1.26.0](https://github.com/nationalarchives/docker/compare/v1.25.0...v1.26.0) - 2026-10-22
+
+### Changed
+
+- Updated Python to [3.15](https://peps.python.org/pep-0790/)
+- Updated djLint to [v1.46.6](https://github.com/djlint/djLint/releases/tag/v1.46.6)
+
+### Security
+
+- Remove explicit install for `perl=5.40.1-6+deb13u1` as these are now included upstream
+
 ## [1.25.0](https://github.com/nationalarchives/docker/compare/v1.24.0...v1.25.0) - 2026-10-22
 
 ### Security
diff --git a/docker/tna-python-dev/Dockerfile b/docker/tna-python-dev/Dockerfile
index 1092643..f1f3959 100644
--- a/docker/tna-python-dev/Dockerfile
+++ b/docker/tna-python-dev/Dockerfile
@@ -49,7 +49,7 @@ RUN apt-get update; \
 # want to install to help with development
 # ==========================================
 ENV RUFF_VERSION=0.17.0 \
-    DJLINT_VERSION=1.46.4 \
+    DJLINT_VERSION=1.46.6 \
     DJANGO_DEBUG_TOOLBAR_VERSION=8.0.0 \
     PRETTIER_VERSION=3.9.10 \
     TNA_RUFF_CONFIG_VERSION=0.2.0 \
diff --git a/docker/tna-python/Dockerfile b/docker/tna-python/Dockerfile
index ec8edc5..3c33ff2 100644
--- a/docker/tna-python/Dockerfile
+++ b/docker/tna-python/Dockerfile
@@ -1,6 +1,6 @@
 # hadolint global ignore=DL3059 # DL3059 is only a suggestion
 
-FROM python:3.14-slim-trixie
+FROM python:3.15-slim-trixie
 
 # ==========================================
 # Label this container image with a semantic
@@ -154,7 +154,7 @@ RUN set -eux; \
     export DEBIAN_FRONTEND=noninteractive; \
     apt-get update; \
     apt-get -y upgrade; \
-    apt-get install -y --no-install-recommends curl=8.14.1-2+deb13u7 perl=5.40.1-6+deb13u1 ca-certificates=20250419+deb13u1; \
+    apt-get install -y --no-install-recommends curl=8.14.1-2+deb13u7 ca-certificates=20250419+deb13u1; \
     apt-get clean; \
     apt-get autoremove -y --purge; \
 	rm -rfv /var/lib/apt/lists/*