diff --git a/core.go b/core.go
index f05941d..7fec75c 100644
--- a/core.go
+++ b/core.go
@@ -17,7 +17,7 @@ import (
 	"github.com/tetratelabs/wazero/experimental/sys"
 	"github.com/tetratelabs/wazero/imports/wasi_snapshot_preview1"
 
-	"github.com/karelbilek/wazero-fs-tools/memfs"
+	"github.com/gaukas/wazerofs/memfs"
 	expsysfs "github.com/tetratelabs/wazero/experimental/sysfs"
 )
 
diff --git a/go.mod b/go.mod
index 8735797..7accc43 100644
--- a/go.mod
+++ b/go.mod
@@ -1,18 +1,17 @@
 module github.com/refraction-networking/water
 
-go 1.22.0
+go 1.21
 
 retract (
 	v0.6.1 // bad submodule
 	v0.6.0 // bad LICENSE naming
 )
 
-replace github.com/tetratelabs/wazero v1.7.0 => github.com/refraction-networking/wazero v1.7.0-w
+replace github.com/tetratelabs/wazero => github.com/refraction-networking/wazero v1.7.1-w
 
 require (
-	github.com/karelbilek/wazero-fs-tools v0.0.0-20240317201741-fc5622f5bd12
-	github.com/tetratelabs/wazero v1.7.0
-	golang.org/x/exp v0.0.0-20240119083558-1b970713d09a
+	github.com/gaukas/wazerofs v0.1.0
+	github.com/tetratelabs/wazero v1.7.1
 	google.golang.org/protobuf v1.33.0
 )
 
diff --git a/go.sum b/go.sum
index 7eb2f35..48d38e3 100644
--- a/go.sum
+++ b/go.sum
@@ -1,12 +1,12 @@
 github.com/blang/vfs v1.0.0 h1:AUZUgulCDzbaNjTRWEP45X7m/J10brAptZpSRKRZBZc=
 github.com/blang/vfs v1.0.0/go.mod h1:jjuNUc/IKcRNNWC9NUCvz4fR9PZLPIKxEygtPs/4tSI=
-github.com/google/go-cmp v0.5.8 h1:e6P7q2lk1O+qJJb4BtCQXlK8vWEO8V1ZeuEdJNOqZyg=
-github.com/google/go-cmp v0.5.8/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
-github.com/karelbilek/wazero-fs-tools v0.0.0-20240317201741-fc5622f5bd12 h1:2BGAdZ5gPGtRgLawYeDR2XTjWoi38kNYVF8vzrESQDw=
-github.com/karelbilek/wazero-fs-tools v0.0.0-20240317201741-fc5622f5bd12/go.mod h1:Ed3NLyTuuJ7rNUITSo+wEvMbRLwYjslaE5w8q/UWoEA=
-github.com/refraction-networking/wazero v1.7.0-w h1:fFQO1VL+fhpFWIgfZN9FPnWYhf5DTyzwzJijqg/LUm4=
-github.com/refraction-networking/wazero v1.7.0-w/go.mod h1:ytl6Zuh20R/eROuyDaGPkp82O9C/DJfXAwJfQ3X6/7Y=
-golang.org/x/exp v0.0.0-20240119083558-1b970713d09a h1:Q8/wZp0KX97QFTc2ywcOE0YRjZPVIx+MXInMzdvQqcA=
-golang.org/x/exp v0.0.0-20240119083558-1b970713d09a/go.mod h1:idGWGoKP1toJGkd5/ig9ZLuPcZBC3ewk7SzmH0uou08=
+github.com/gaukas/wazerofs v0.1.0 h1:wIkW1bAxSnpaaVkQ5LOb1tm1BXdVap3eKjJpVWIqt2E=
+github.com/gaukas/wazerofs v0.1.0/go.mod h1:+JECB9Fwt0taPqSgHckG9lmT3tcoVK+9VJozTsq9UlI=
+github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
+github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/refraction-networking/wazero v1.7.1-w h1:z7Ty5PsMkJEDBCsn3ELUjceQGBT0FMVGldOSpDK3giQ=
+github.com/refraction-networking/wazero v1.7.1-w/go.mod h1:ytl6Zuh20R/eROuyDaGPkp82O9C/DJfXAwJfQ3X6/7Y=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
 google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
diff --git a/internal/log/slog_alias_old.go b/internal/log/slog_alias_old.go
deleted file mode 100644
index 8e04aa8..0000000
--- a/internal/log/slog_alias_old.go
+++ /dev/null
@@ -1,39 +0,0 @@
-//go:build !go1.21
-
-package log
-
-import (
-	"golang.org/x/exp/slog"
-)
-
-// Logger is an alias for slog.Logger. It is used here to avoid
-// importing slog in the rest of the code, since slog needs to be
-// imported conditionally based on the Go version.
-type Logger = slog.Logger
-type Handler = LogHandler // Deprecated: use LogHandler. The naming of this type is ambiguous.
-type LogHandler = slog.Handler
-
-var defaultLogger *Logger = slog.Default()
-
-// SetLogger specifies the logger to be used by the package.
-// By default, slog.Default() is used.
-//
-// It overrides the logger created by SetDefaultHandler.
-func SetDefaultLogger(logger *Logger) {
-	defaultLogger = logger
-}
-
-// SetDefaultHandler specifies the handler to be used by the package.
-//
-// It overrides the logger specified by SetDefaultLogger.
-func SetDefaultHandler(handler LogHandler) {
-	defaultLogger = slog.New(handler)
-}
-
-// DefaultLogger returns the current default logger.
-//
-// It might not be equivalent to slog.Default() if SetDefaultLogger
-// or SetDefaultHandler was called before.
-func DefaultLogger() *Logger {
-	return defaultLogger
-}