diff --git a/.app_version b/.app_version
index 4ccdce11..4e8f395f 100644
--- a/.app_version
+++ b/.app_version
@@ -1 +1 @@
-0.25.10
+0.26.0
diff --git a/.devcontainer/docker-compose.yml b/.devcontainer/docker-compose.yml
index d697d8f8..04fd589b 100644
--- a/.devcontainer/docker-compose.yml
+++ b/.devcontainer/docker-compose.yml
@@ -48,7 +48,7 @@ services:
       start_period: 30s
       timeout: 10s
   dawarich_db:
-    image: postgres:17-alpine
+    image: postgis/postgis:17-3.5-alpine
     container_name: dawarich_db
     volumes:
       - dawarich_db_data:/var/lib/postgresql/data
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7fd0ce0d..f9945b0c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,23 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
-# 0.25.10 - 2025-05-02
+# 0.26.0 - 2025-05-08
+
+⚠️ This release includes a breaking change. ⚠️
+
+Starting this version, Dawarich requires PostgreSQL 17 with PostGIS 3.5. If you haven't updated your database image yet, please consider doing so as suggested in the [docs on the website](https://dawarich.app/docs/tutorials/update-postgresql/). Simply replacing the image in the `docker-compose.yml` unfortunately doesn't work, as PostgreSQL 17 is not backwards compatible with 14 (which was used in previous versions).
+
+If you have encountered problems with moving to a PostGIS image while still on Postgres 14, I collected a selection of compatible docker images for different CPU architectures, which you can also find in the [docs](https://dawarich.app/docs/tutorials/moving-to-postgis/). New users will be automatically provisioned with PostgreSQL 17 with PostGIS 3.5 with default `docker-compose.yml` file.
+
+**You still may use PostgreSQL 14, but no support will be provided for it starting this version. It's strongly recommended to update to PostgreSQL 17.**
+
+## Changed
+
+- Dawarich now uses PostgreSQL 17 with PostGIS 3.5 by default.
+
+
+
+# 0.25.10 - 2025-05-08
 
 ## Added
 
diff --git a/docker/Dockerfile.dev b/docker/Dockerfile.dev
index 74ac8e32..bf5c796f 100644
--- a/docker/Dockerfile.dev
+++ b/docker/Dockerfile.dev
@@ -39,7 +39,7 @@ COPY ../Gemfile ../Gemfile.lock ../.ruby-version ../vendor ./
 # Install all gems into the image
 RUN bundle config set --local path 'vendor/bundle' \
     && bundle install --jobs 4 --retry 3 \
-    && rm -rf vendor/bundle/ruby/3.3.0/cache/*.gem
+    && rm -rf vendor/bundle/ruby/3.4.1/cache/*.gem
 
 # Copy the rest of the application
 COPY ../. ./
diff --git a/docker/Dockerfile.prod b/docker/Dockerfile.prod
index 1d383cc7..4bd70469 100644
--- a/docker/Dockerfile.prod
+++ b/docker/Dockerfile.prod
@@ -37,7 +37,7 @@ COPY ../Gemfile ../Gemfile.lock ../.ruby-version ../vendor ./
 RUN bundle config set --local path 'vendor/bundle' \
     && bundle config set --local without 'development test' \
     && bundle install --jobs 4 --retry 3 \
-    && rm -rf vendor/bundle/ruby/3.3.0/cache/*.gem
+    && rm -rf vendor/bundle/ruby/3.4.1/cache/*.gem
 
 COPY ../. ./
 
diff --git a/docker/docker-compose.production.yml b/docker/docker-compose.production.yml
index 054571f7..8dbf3f28 100644
--- a/docker/docker-compose.production.yml
+++ b/docker/docker-compose.production.yml
@@ -17,7 +17,7 @@ services:
       start_period: 30s
       timeout: 10s
   dawarich_db:
-    image: postgres:17-alpine # TODO: Use postgis here
+    image: postgis/postgis:17-3.5-alpine
     shm_size: 1G
     container_name: dawarich_db
     volumes:
diff --git a/docker/docker-compose.yml b/docker/docker-compose.yml
index dc32f337..bfadcb5a 100644
--- a/docker/docker-compose.yml
+++ b/docker/docker-compose.yml
@@ -17,7 +17,7 @@ services:
       start_period: 30s
       timeout: 10s
   dawarich_db:
-    image: postgis/postgis:14-3.5-alpine
+    image: postgis/postgis:17-3.5-alpine
     shm_size: 1G
     container_name: dawarich_db
     volumes:
diff --git a/docs/synology/docker-compose.yml b/docs/synology/docker-compose.yml
index cfb625a9..8beafa59 100644
--- a/docs/synology/docker-compose.yml
+++ b/docs/synology/docker-compose.yml
@@ -10,7 +10,7 @@ services:
       - ./redis:/var/shared/redis
 
   dawarich_db:
-    image: postgis/postgis:14-3.5-alpine
+    image: postgis/postgis:17-3.5-alpine
     container_name: dawarich_db
     restart: unless-stopped
     environment: