diff --git a/Dockerfile b/Dockerfile
index 205b2e0..7904216 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,13 +1,13 @@
 # Stage 1 — Install dependencies
 FROM node:24-bookworm-slim AS deps
-RUN corepack enable && corepack prepare pnpm@10.34.5 --activate
+RUN npm install -g pnpm@10.34.5
 WORKDIR /app
 COPY package.json pnpm-lock.yaml ./
 RUN pnpm install --frozen-lockfile
 
 # Stage 2 — Build TypeScript and prune dev dependencies
 FROM node:24-bookworm-slim AS build
-RUN corepack enable && corepack prepare pnpm@10.34.5 --activate
+RUN npm install -g pnpm@10.34.5
 WORKDIR /app
 COPY --from=deps /app/node_modules ./node_modules
 COPY package.json pnpm-lock.yaml tsconfig.json ./
diff --git a/renovate.json b/renovate.json
index 23e112b..c5ffa2c 100644
--- a/renovate.json
+++ b/renovate.json
@@ -10,10 +10,10 @@
       "datasourceTemplate": "npm"
     },
     {
-      "description": "Track the pnpm version corepack activates in the Dockerfile.",
+      "description": "Track the pnpm version installed in the Dockerfile.",
       "customType": "regex",
       "managerFilePatterns": ["/^Dockerfile$/"],
-      "matchStrings": ["corepack prepare (?<depName>pnpm)@(?<currentValue>\\S+) --activate"],
+      "matchStrings": ["npm install -g (?<depName>pnpm)@(?<currentValue>\\S+)"],
       "datasourceTemplate": "npm"
     }
   ]