diff --git a/go.mod b/go.mod
index 7b04f133..a997b1c5 100644
--- a/go.mod
+++ b/go.mod
@@ -17,7 +17,7 @@ require (
 	github.com/jessevdk/go-flags v1.4.0
 	github.com/lestrrat/go-tcptest v0.0.0-20180223004105-0f9f9980aecf
 	github.com/lestrrat/go-tcputil v0.0.0-20180223002529-67ef49c1ebf3 // indirect
-	github.com/lib/pq v1.3.0
+	github.com/lib/pq v1.5.2
 	github.com/mackerelio/checkers v0.0.0-20190411030116-60cbd7b55456
 	github.com/mackerelio/go-osstat v0.1.0
 	github.com/mackerelio/golib v0.0.0-20191002020229-a65782d392ca
diff --git a/go.sum b/go.sum
index e5bde5ea..1626a3d2 100644
--- a/go.sum
+++ b/go.sum
@@ -116,6 +116,8 @@ github.com/lestrrat/go-tcputil v0.0.0-20180223002529-67ef49c1ebf3 h1:qbEBRH3oeH2
 github.com/lestrrat/go-tcputil v0.0.0-20180223002529-67ef49c1ebf3/go.mod h1:B+/nnJuKL4WcXSYfHy1SqQeHbl58EeOVNOJvXmtgi+k=
 github.com/lib/pq v1.3.0 h1:/qkRGz8zljWiDcFvgpwUpwIAPu3r07TDvs3Rws+o/pU=
 github.com/lib/pq v1.3.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
+github.com/lib/pq v1.5.2 h1:yTSXVswvWUOQ3k1sd7vJfDrbSl8lKuscqFJRqjC0ifw=
+github.com/lib/pq v1.5.2/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
 github.com/mackerelio/checkers v0.0.0-20190411030116-60cbd7b55456 h1:TN6fEPX3sQRkg4nvztTBYD0UTNEY5x52XMmBwT9HqLU=
 github.com/mackerelio/checkers v0.0.0-20190411030116-60cbd7b55456/go.mod h1:diyNFS/RRid22TaIOKvNf0GfzpJ2Yo91JuKxg9Q8gGI=
 github.com/mackerelio/go-osstat v0.1.0 h1:e57QHeHob8kKJ5FhcXGdzx5O6Ktuc5RHMDIkeqhgkFA=