diff --git a/.github/workflows/docker-image.yaml b/.github/workflows/docker-image.yaml
index 956d5d3..1726f54 100644
--- a/.github/workflows/docker-image.yaml
+++ b/.github/workflows/docker-image.yaml
@@ -10,6 +10,10 @@ on:
     branches:
       - 'main'
 
+env:
+  mtk_version: v2.0.2
+
+
 jobs:
   docker:
     runs-on: ubuntu-latest
@@ -54,3 +58,5 @@ jobs:
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
+          build-args: |
+            MTK_VERSION=$mtk_version
diff --git a/Dockerfile b/Dockerfile
index b7d5e40..f63dd2f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,10 +1,12 @@
+ARG MTK_VERSION
+
 # build MTK from source
 FROM golang:1.18-alpine as builder
 
 WORKDIR /go/src/github.com/skpr
 RUN apk add --virtual --update-cache git && \
 	rm -rf /tmp/* /var/tmp/* /var/cache/apk/* /var/cache/distfiles/*
-RUN git clone https://github.com/skpr/mtk.git && cd mtk && git checkout 0c133b920123f05404854f3aacf44f05e6d20e03
+RUN git clone https://github.com/skpr/mtk.git && cd mtk && git checkout $MTK_VERSION
 WORKDIR /go/src/github.com/skpr/mtk/dump
 
 # compile
diff --git a/renovate.json b/renovate.json
index e054dea..7cd58bb 100644
--- a/renovate.json
+++ b/renovate.json
@@ -9,5 +9,17 @@
         "matchDepTypes": ["action"],
         "groupName": "GitHub actions"
       }
-    ]
-  }
+    ],
+    // MTK version -- really wanted to put this in a .env or something, but this was as close as I could get
+    customManagers: [
+      {
+        customType: 'regex',
+        fileMatch: ['.github/workflows/docker-image.yaml'],
+        matchStrings: [
+          'env:\\s*mtk_version=(?<mtk_version>.*?)',
+        ],
+        depName: 'skpr/mtk',
+        datasourceTemplate: 'github-tags',
+      },
+    ],
+}