diff --git a/go.mod b/go.mod
index 8e0be03..251614d 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.15
 require (
 	github.com/mattn/go-sqlite3 v1.14.6
 	modernc.org/ccgo/v3 v3.0.0-20210323214039-32b85d4592bd
-	modernc.org/libc v1.9.2
+	modernc.org/libc v1.9.3
 	modernc.org/mathutil v1.2.2
 	modernc.org/tcl v0.0.0-20210323214417-36b88133ff26
 	modernc.org/z v1.0.1
diff --git a/go.sum b/go.sum
index 39f7840..01b73be 100644
--- a/go.sum
+++ b/go.sum
@@ -46,8 +46,9 @@ modernc.org/ccgo/v3 v3.0.0-20210323214039-32b85d4592bd/go.mod h1:aopmMk0XIpnk9jS
 modernc.org/httpfs v1.0.6 h1:AAgIpFZRXuYnkjftxTAZwMIiwEqAfk8aVB2/oA6nAeM=
 modernc.org/httpfs v1.0.6/go.mod h1:7dosgurJGp0sPaRanU53W4xZYKh14wfzX420oZADeHM=
 modernc.org/libc v1.7.13-0.20210308123627-12f642a52bb8/go.mod h1:U1eq8YWr/Kc1RWCMFUWEdkTg8OTcfLw2kY8EDwl039w=
-modernc.org/libc v1.9.2 h1:PYr5miNafdDGOxvBAOKN29CHXf93t4Y6YDmwkbu+8Uk=
 modernc.org/libc v1.9.2/go.mod h1:U1eq8YWr/Kc1RWCMFUWEdkTg8OTcfLw2kY8EDwl039w=
+modernc.org/libc v1.9.3 h1:4IcbnITV5zKr+tC5AaDFtxVMMN1PG0yiu9deN651vOY=
+modernc.org/libc v1.9.3/go.mod h1:U1eq8YWr/Kc1RWCMFUWEdkTg8OTcfLw2kY8EDwl039w=
 modernc.org/mathutil v1.1.1/go.mod h1:mZW8CKdRPY1v87qxC/wUdX5O1qDzXMP5TH3wjfpga6E=
 modernc.org/mathutil v1.2.2 h1:+yFk8hBprV+4c0U9GjFtL+dV3N8hOJ8JCituQcMShFY=
 modernc.org/mathutil v1.2.2/go.mod h1:mZW8CKdRPY1v87qxC/wUdX5O1qDzXMP5TH3wjfpga6E=
@@ -61,7 +62,6 @@ modernc.org/tcl v0.0.0-20210323214417-36b88133ff26 h1:QNnKSgHGWxs23qefEGZ9ZdYihx
 modernc.org/tcl v0.0.0-20210323214417-36b88133ff26/go.mod h1:/yxJrareine2S+cISCeTymmwhd0xrXO2rxSfLSPhVDo=
 modernc.org/token v1.0.0 h1:a0jaWiNMDhDUtqOj09wvjWWAqd3q7WpBulmL9H2egsk=
 modernc.org/token v1.0.0/go.mod h1:UGzOrNV1mAFSEB63lOFHIpNRUVMvYTc6yu1SMY/XTDM=
-modernc.org/z v1.0.1-0.20210308123920-1f282aa71362 h1:xUpazXgMcN3whs6DGzAUHVlZyQl4sahj6Lvv2kFj73w=
 modernc.org/z v1.0.1-0.20210308123920-1f282aa71362/go.mod h1:8/SRk5C/HgiQWCgXdfpb+1RvhORdkz5sw72d3jjtyqA=
 modernc.org/z v1.0.1 h1:WyIDpEpAIx4Hel6q/Pcgj/VhaQV5XPJ2I6ryIYbjnpc=
 modernc.org/z v1.0.1/go.mod h1:8/SRk5C/HgiQWCgXdfpb+1RvhORdkz5sw72d3jjtyqA=