diff --git a/CHANGELOG.md b/CHANGELOG.md
index 71469af663..7623b90f3c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
 FEATURES:
 
 ENHANCEMENTS:
+* Update Unrestricted and Airlock Import Review workspaces to be built off the Base workspace 0.19.0 ([#4087](https://github.com/microsoft/AzureTRE/pull/4087))
 
 BUG FIXES:
 
diff --git a/templates/workspaces/airlock-import-review/Dockerfile.tmpl b/templates/workspaces/airlock-import-review/Dockerfile.tmpl
index b572098d23..057038c25c 100644
--- a/templates/workspaces/airlock-import-review/Dockerfile.tmpl
+++ b/templates/workspaces/airlock-import-review/Dockerfile.tmpl
@@ -9,7 +9,7 @@ RUN rm -f /etc/apt/apt.conf.d/docker-clean; echo 'Binary::apt::APT::Keep-Downloa
 RUN --mount=type=cache,target=/var/cache/apt --mount=type=cache,target=/var/lib/apt \
     apt-get update && apt-get install -y git jq curl ca-certificates patch --no-install-recommends
 
-ARG AZURE_TRE_VERSION="0.15.2"
+ARG AZURE_TRE_VERSION="0.19.0"
 
 WORKDIR ${BUNDLE_DIR}
 
@@ -20,8 +20,6 @@ RUN curl -o azuretre.tar.gz -L "https://github.com/microsoft/AzureTRE/archive/re
 
 # Copy and change the file extension of .terraform file to .tf
 COPY ./terraform/import_review_resources.terraform "${BUNDLE_DIR}"/terraform/import_review_resources.tf
-# HACK: PR #3769: Remove once base workspace includes this change
-COPY ./terraform/network_output.terraform "${BUNDLE_DIR}"/terraform/network/temp_output.tf
 
 # PORTER_MIXINS
 
diff --git a/templates/workspaces/airlock-import-review/porter.yaml b/templates/workspaces/airlock-import-review/porter.yaml
index 5943388107..9ab7fe1685 100644
--- a/templates/workspaces/airlock-import-review/porter.yaml
+++ b/templates/workspaces/airlock-import-review/porter.yaml
@@ -1,7 +1,7 @@
 ---
 schemaVersion: 1.0.0
 name: tre-workspace-airlock-import-review
-version: 0.12.16
+version: 0.13.0
 description: "A workspace to do Airlock Data Import Reviews for Azure TRE"
 dockerfile: Dockerfile.tmpl
 registry: azuretre
diff --git a/templates/workspaces/airlock-import-review/terraform/network_output.terraform b/templates/workspaces/airlock-import-review/terraform/network_output.terraform
deleted file mode 100644
index 67d264f66b..0000000000
--- a/templates/workspaces/airlock-import-review/terraform/network_output.terraform
+++ /dev/null
@@ -1,4 +0,0 @@
-# HACK: PR #3769: Remove file when base workspace release updated
-output "vnet_id" {
-  value = azurerm_virtual_network.ws.id
-}
diff --git a/templates/workspaces/unrestricted/Dockerfile.tmpl b/templates/workspaces/unrestricted/Dockerfile.tmpl
index 53d78008f2..ffe968ddb9 100644
--- a/templates/workspaces/unrestricted/Dockerfile.tmpl
+++ b/templates/workspaces/unrestricted/Dockerfile.tmpl
@@ -9,7 +9,7 @@ RUN rm -f /etc/apt/apt.conf.d/docker-clean; echo 'Binary::apt::APT::Keep-Downloa
 RUN --mount=type=cache,target=/var/cache/apt --mount=type=cache,target=/var/lib/apt \
     apt-get update && apt-get install -y git jq curl ca-certificates patch --no-install-recommends
 
-ARG AZURE_TRE_VERSION="0.14.0"
+ARG AZURE_TRE_VERSION="0.19.0"
 
 WORKDIR $BUNDLE_DIR
 
diff --git a/templates/workspaces/unrestricted/porter.yaml b/templates/workspaces/unrestricted/porter.yaml
index fd3a07583c..bccd58e790 100644
--- a/templates/workspaces/unrestricted/porter.yaml
+++ b/templates/workspaces/unrestricted/porter.yaml
@@ -1,7 +1,7 @@
 ---
 schemaVersion: 1.0.0
 name: tre-workspace-unrestricted
-version: 0.11.4
+version: 0.12.0
 description: "A base Azure TRE workspace"
 dockerfile: Dockerfile.tmpl
 registry: azuretre