diff --git a/README.md b/README.md
index 0452ce6..93d73da 100644
--- a/README.md
+++ b/README.md
@@ -35,3 +35,8 @@ env:
 ```
 
 The `env.yml` file is ignored by version-control.
+
+### Image versions
+
+When building and starting images, images are tagged with either the release version (if on a commit that's tagged with
+a release) or a dev tag that includes the hash (i.e. `dev-<commit-hash>`).
diff --git a/Taskfile.internal.yml b/Taskfile.internal.yml
index a063027..ab6a809 100644
--- a/Taskfile.internal.yml
+++ b/Taskfile.internal.yml
@@ -8,10 +8,14 @@ tasks:
     prefix: "build image: {{ .SERVICE }}"
     dir: services/{{ .SERVICE }}
     cmd: . ./build.sh
+    env:
+      IMAGE_VERSION: "{{ .VERSION }}"
   start-service:
     prefix: "start: {{ .SERVICE }}"
     dir: services/{{ .SERVICE }}
     cmd: . ./start.sh
+    env:
+      IMAGE_VERSION: "{{ .VERSION }}"
   stop-service:
     prefix: "stop: {{ .SERVICE }}"
     dir: services/{{ .SERVICE }}
diff --git a/Taskfile.yml b/Taskfile.yml
index 05895f0..678a709 100644
--- a/Taskfile.yml
+++ b/Taskfile.yml
@@ -11,6 +11,11 @@ includes:
 
 output: prefixed
 
+vars:
+  # Any build that is not on a tag is a development build.
+  CURRENT_VERSION:
+    sh: git describe --tags --exact-match $(git rev-parse HEAD) 2> /dev/null || echo "dev-$(git rev-parse HEAD)"
+
 tasks:
   build:
     desc: "Builds images for one or more services. Include service names as a space-separated list."
@@ -19,6 +24,7 @@ tasks:
         task: internal:build-images
         vars:
           SERVICE: "{{ .ITEM }}"
+          VERSION: "{{ .CURRENT_VERSION }}"
     prefix: "build: {{ .CLI_ARGS }}"
     dir: services
   start:
@@ -28,6 +34,7 @@ tasks:
         task: internal:start-service
         vars:
           SERVICE: "{{ .ITEM }}"
+          VERSION: "{{ .CURRENT_VERSION }}"
     prefix: "start: {{ .CLI_ARGS }}"
     dir: services
   stop:
diff --git a/services/bastion/build.sh b/services/bastion/build.sh
index c1c8dbc..0123c23 100644
--- a/services/bastion/build.sh
+++ b/services/bastion/build.sh
@@ -2,4 +2,4 @@
 
 source constants.sh
 
-docker build -t $APP_IMAGE_NAME:dev -f Dockerfile-bastion-app .
+docker build -t $APP_IMAGE_NAME:$IMAGE_VERSION -f Dockerfile-bastion-app .
diff --git a/services/bastion/start.sh b/services/bastion/start.sh
index 9127429..2d8f247 100644
--- a/services/bastion/start.sh
+++ b/services/bastion/start.sh
@@ -9,4 +9,4 @@ docker run \
     --network $NETWORK_NAME \
     --name $APP_CONTAINER_NAME \
     --env-file $ENV_FILE_DIR/bastion.env \
-    $APP_IMAGE_NAME:dev
+    $APP_IMAGE_NAME:$IMAGE_VERSION
diff --git a/services/bitwarden/build.sh b/services/bitwarden/build.sh
index 59dd88f..de4d126 100644
--- a/services/bitwarden/build.sh
+++ b/services/bitwarden/build.sh
@@ -2,5 +2,5 @@
 
 source constants.sh
 
-docker build -t $DB_IMAGE_NAME:dev -f Dockerfile-bitwarden-db .
-docker build -t $APP_IMAGE_NAME:dev -f Dockerfile-bitwarden-app .
+docker build -t $DB_IMAGE_NAME:$IMAGE_VERSION -f Dockerfile-bitwarden-db .
+docker build -t $APP_IMAGE_NAME:$IMAGE_VERSION -f Dockerfile-bitwarden-app .
diff --git a/services/bitwarden/start.sh b/services/bitwarden/start.sh
index a281880..a904191 100644
--- a/services/bitwarden/start.sh
+++ b/services/bitwarden/start.sh
@@ -10,7 +10,7 @@ docker run \
     --name $DB_CONTAINER_NAME \
     --env-file $ENV_FILE_DIR/bitwarden-db.env \
     --mount type=bind,source=$APP_DATA_DIR/bitwarden/db,target=/var/lib/mysql \
-    $DB_IMAGE_NAME:dev
+    $DB_IMAGE_NAME:$IMAGE_VERSION
 
 docker run \
     --detach \
@@ -20,4 +20,4 @@ docker run \
     --publish 8080:8080 \
     --mount type=bind,source=$APP_DATA_DIR/bitwarden/config,target=/etc/bitwarden \
     --mount type=bind,source=$APP_DATA_DIR/bitwarden/logs,target=/var/log/bitwarden \
-    $APP_IMAGE_NAME:dev
+    $APP_IMAGE_NAME:$IMAGE_VERSION
diff --git a/services/bookstack/build.sh b/services/bookstack/build.sh
index d56d161..c53c7c9 100644
--- a/services/bookstack/build.sh
+++ b/services/bookstack/build.sh
@@ -2,5 +2,5 @@
 
 source constants.sh
 
-docker build -t $DB_IMAGE_NAME:dev -f Dockerfile-bookstack-db .
-docker build -t $APP_IMAGE_NAME:dev -f Dockerfile-bookstack-app .
+docker build -t $DB_IMAGE_NAME:$IMAGE_VERSION -f Dockerfile-bookstack-db .
+docker build -t $APP_IMAGE_NAME:$IMAGE_VERSION -f Dockerfile-bookstack-app .
diff --git a/services/bookstack/start.sh b/services/bookstack/start.sh
index e8bda88..86ebdd7 100644
--- a/services/bookstack/start.sh
+++ b/services/bookstack/start.sh
@@ -10,7 +10,7 @@ docker run \
     --name $DB_CONTAINER_NAME \
     --env-file $ENV_FILE_DIR/bookstack-db.env \
     --mount type=bind,source=$APP_DATA_DIR/bookstack-db,target=/var/lib/mysql \
-    $DB_IMAGE_NAME:dev
+    $DB_IMAGE_NAME:$IMAGE_VERSION
 
 docker run \
     --detach \
@@ -19,4 +19,4 @@ docker run \
     --env-file $ENV_FILE_DIR/bookstack-app.env \
     --publish 6875:80 \
     --mount type=bind,source=$APP_DATA_DIR/bookstack-app,target=/config \
-    $APP_IMAGE_NAME:dev
+    $APP_IMAGE_NAME:$IMAGE_VERSION
diff --git a/services/deluge/build.sh b/services/deluge/build.sh
index d2adb1b..0560945 100644
--- a/services/deluge/build.sh
+++ b/services/deluge/build.sh
@@ -2,4 +2,4 @@
 
 source constants.sh
 
-docker build -t $APP_IMAGE_NAME:dev -f Dockerfile-deluge-app .
+docker build -t $APP_IMAGE_NAME:$IMAGE_VERSION -f Dockerfile-deluge-app .
diff --git a/services/deluge/start.sh b/services/deluge/start.sh
index 69b05e6..facfdea 100644
--- a/services/deluge/start.sh
+++ b/services/deluge/start.sh
@@ -15,4 +15,4 @@ docker run \
     --mount type=bind,source=$APP_DATA_DIR/deluge/config,target=/config \
     --mount type=bind,source=$APP_DATA_DIR/deluge/downloads,target=/downloads \
     --mount type=bind,source=$STORAGE_DIR,target=/complete \
-    $APP_IMAGE_NAME:dev
+    $APP_IMAGE_NAME:$IMAGE_VERSION
diff --git a/services/plex/build.sh b/services/plex/build.sh
index 27a376f..5e39262 100644
--- a/services/plex/build.sh
+++ b/services/plex/build.sh
@@ -2,4 +2,4 @@
 
 source constants.sh
 
-docker build -t $APP_IMAGE_NAME:dev -f Dockerfile-plex-app .
+docker build -t $APP_IMAGE_NAME:$IMAGE_VERSION -f Dockerfile-plex-app .
diff --git a/services/plex/start.sh b/services/plex/start.sh
index f84ee09..a623874 100644
--- a/services/plex/start.sh
+++ b/services/plex/start.sh
@@ -21,4 +21,4 @@ docker run \
     --mount type=bind,source=$APP_DATA_DIR/plex/database,target=/config \
     --mount type=bind,source=$APP_DATA_DIR/plex/transcode,target=/transcode \
     --mount type=bind,source=$STORAGE_DIR/media,target=/data \
-    $APP_IMAGE_NAME:dev
+    $APP_IMAGE_NAME:$IMAGE_VERSION