diff --git a/package-lock.json b/package-lock.json
index a38d8b9..e8e77c4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -697,7 +697,8 @@
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     },
     "pg-connection-string": {
-      "version": "0.1.3",
-      "resolved": "https://registry.npmjs.org/pg-connection-string/-/pg-connection-string-0.1.3.tgz",
-      "integrity": "sha1-2hhHsglA5C7hSSvq9l1J2RskXfc="
+      "version": "2.5.0",
+      "resolved": "https://registry.npmjs.org/pg-connection-string/-/pg-connection-string-2.5.0.tgz",
+      "integrity": "sha512-r5o/V/ORTA6TmUnyWZR9nCj1klXCO2CEKNRlVuJptZe85QuhFayC7WeMic7ndayT5IRIR0S0xFxFi2ousartlQ=="
     },
     "pg-int8": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/pg-int8/-/pg-int8-1.0.1.tgz",
       "integrity": "sha512-WCtabS6t3c8SkpDBUlb1kjOs7l66xsGdKpIPZsg4wR+B3+u9UAum2odSsF9tnvxg80h4ZxLWMy4pRjOsFIqQpw=="
     },
-    "pg-packet-stream": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/pg-packet-stream/-/pg-packet-stream-1.1.0.tgz",
-      "integrity": "sha512-kRBH0tDIW/8lfnnOyTwKD23ygJ/kexQVXZs7gEyBljw4FYqimZFxnMMx50ndZ8In77QgfGuItS5LLclC2TtjYg=="
-    },
     "pg-pool": {
-      "version": "2.0.10",
-      "resolved": "https://registry.npmjs.org/pg-pool/-/pg-pool-2.0.10.tgz",
-      "integrity": "sha512-qdwzY92bHf3nwzIUcj+zJ0Qo5lpG/YxchahxIN8+ZVmXqkahKXsnl2aiJPHLYN9o5mB/leG+Xh6XKxtP7e0sjg=="
+      "version": "3.5.1",
+      "resolved": "https://registry.npmjs.org/pg-pool/-/pg-pool-3.5.1.tgz",
+      "integrity": "sha512-6iCR0wVrro6OOHFsyavV+i6KYL4lVNyYAB9RD18w66xSzN+d8b66HiwuP30Gp1SH5O9T82fckkzsRjlrhD0ioQ=="
+    },
+    "pg-protocol": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/pg-protocol/-/pg-protocol-1.5.0.tgz",
+      "integrity": "sha512-muRttij7H8TqRNu/DxrAJQITO4Ac7RmX3Klyr/9mJEOBeIpgnF8f9jAfRz5d3XwQZl5qBjF9gLsUtMPJE0vezQ=="
     },
     "pg-types": {
       "version": "2.2.0",
@@ -4210,11 +4300,11 @@
       }
     },
     "pgpass": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/pgpass/-/pgpass-1.0.2.tgz",
-      "integrity": "sha1-Knu0G2BltnkH6R2hsHwYR8h3swY=",
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/pgpass/-/pgpass-1.0.5.tgz",
+      "integrity": "sha512-FdW9r/jQZhSeohs1Z3sI1yxFQNFvMcnmfuj4WBMUTxOrAyLMaTcE1aAMBiTlbMNaXvBCQuVi0R7hd8udDSP7ug==",
       "requires": {
-        "split": "^1.0.0"
+        "split2": "^4.1.0"
       }
     },
     "picomatch": {
@@ -4276,12 +4366,12 @@
     "postgres-bytea": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/postgres-bytea/-/postgres-bytea-1.0.0.tgz",
-      "integrity": "sha1-AntTPAqokOJtFy1Hz5zOzFIazTU="
+      "integrity": "sha512-xy3pmLuQqRBZBXDULy7KbaitYqLcmxigw14Q5sj8QBVLqEwXfeybIKVWiqAXTlcvdvb0+xkOtDbfQMOf4lST1w=="
     },
     "postgres-date": {
-      "version": "1.0.5",
-      "resolved": "https://registry.npmjs.org/postgres-date/-/postgres-date-1.0.5.tgz",
-      "integrity": "sha512-pdau6GRPERdAYUQwkBnGKxEfPyhVZXG/JiS44iZWiNdSOWE09N2lUgN6yshuq6fVSon4Pm0VMXd1srUUkLe9iA=="
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/postgres-date/-/postgres-date-1.0.7.tgz",
+      "integrity": "sha512-suDmjLVQg78nMK2UZ454hAG+OAW+HQPZ6n++TNDUX+L0+uUlLywnoxJKDou51Zm+zTCjrCl0Nq6J9C5hP9vK/Q=="
     },
     "postgres-interval": {
       "version": "1.2.0",
@@ -4821,13 +4911,10 @@
         }
       }
     },
-    "split": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/split/-/split-1.0.1.tgz",
-      "integrity": "sha512-mTyOoPbrivtXnwnIxZRFYRrPNtEFKlpB2fvjSnCQUiAA6qAZzqwna5envK4uk6OIeP17CsdF3rSBGYVBsU0Tkg==",
-      "requires": {
-        "through": "2"
-      }
+    "split2": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/split2/-/split2-4.1.0.tgz",
+      "integrity": "sha512-VBiJxFkxiXRlUIeyMQi8s4hgvKCSjtknJv/LVYbrgALPwf5zSKmEwV9Lst25AkvMDnvxODugjdl6KZgwKM1WYQ=="
     },
     "sprintf-js": {
       "version": "1.0.3",
@@ -4952,6 +5039,11 @@
       "resolved": "https://registry.npmjs.org/strip-eof/-/strip-eof-1.0.0.tgz",
       "integrity": "sha1-u0P/VZim6wXYm1n80SnJgzE2Br8="
     },
+    "strip-final-newline": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/strip-final-newline/-/strip-final-newline-2.0.0.tgz",
+      "integrity": "sha512-BrpvfNAE3dcvq7ll3xVumzjKjZQ5tI1sEUIKr3Uoks0XUl45St3FlatVqef9prk4jRDzhW6WZg+3bk93y6pLjA=="
+    },
     "strip-json-comments": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-3.1.0.tgz",
@@ -5098,7 +5190,8 @@
     "through": {
       "version": "2.3.8",
       "resolved": "https://registry.npmjs.org/through/-/through-2.3.8.tgz",
-      "integrity": "sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU="
+      "integrity": "sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=",
+      "dev": true
     },
     "tmp": {
       "version": "0.0.33",
diff --git a/package.json b/package.json
index 2f07ea6..029a5d4 100644
--- a/package.json
+++ b/package.json
@@ -54,7 +54,7 @@
     "@loopback/rest": "^3.1.0",
     "@loopback/rest-explorer": "^2.0.2",
     "@loopback/service-proxy": "^2.0.2",
-    "loopback-connector-postgresql": "^3.9.1",
+    "loopback-connector-postgresql": "^5.5.1",
     "tslib": "^1.10.0"
   },
   "devDependencies": {