diff --git a/postgres/Dockerfile b/postgres/Dockerfile
index e2733d8..edebb2e 100644
--- a/postgres/Dockerfile
+++ b/postgres/Dockerfile
@@ -1,4 +1,4 @@
-FROM postgres:17.6
+FROM postgres:17.6@sha256:00bc86618629af00d2937fdc5a5d63db3ff8450acf52f0636ec813c7f4902929
 
 RUN cd /var/lib/postgresql/ && \
     openssl req -new -text -passout pass:abcd -subj /CN=localhost -out server.req -keyout privkey.pem && \
diff --git a/sdk/ts/package.json b/sdk/ts/package.json
index de57003..b1f87f5 100644
--- a/sdk/ts/package.json
+++ b/sdk/ts/package.json
@@ -16,6 +16,6 @@
     "prepare": "npm run build"
   },
   "devDependencies": {
-    "typescript": "^4.0 || ^5.0"
+    "typescript": "5.9.3"
   }
 }