diff --git a/Dockerfile b/Dockerfile
index 9077201c3..fe95f3072 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 FROM alpine:latest
-RUN apk --no-cache add ca-certificates
+RUN apk --no-cache add ca-certificates tzdata
 WORKDIR /listmonk
 COPY listmonk .
 COPY config.toml.sample config.toml
diff --git a/docker-compose.yml b/docker-compose.yml
index 8f09d3a18..2a22c4313 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -11,6 +11,8 @@ x-app-defaults: &app-defaults
     - "9000:9000"
   networks:
     - listmonk
+  environment:
+    - TZ=Etc/UTC
 
 x-db-defaults: &db-defaults
   image: postgres:13
diff --git a/go.mod b/go.mod
index 3f4e9e848..33238b7ca 100644
--- a/go.mod
+++ b/go.mod
@@ -25,7 +25,7 @@ require (
 	github.com/mitchellh/mapstructure v1.4.2 // indirect
 	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
 	github.com/pelletier/go-toml v1.9.4 // indirect
-	github.com/rhnvrm/simples3 v0.7.0
+	github.com/rhnvrm/simples3 v0.8.0
 	github.com/spf13/cast v1.4.1 // indirect
 	github.com/spf13/pflag v1.0.5
 	github.com/yuin/goldmark v1.4.1
diff --git a/go.sum b/go.sum
index 65edb8969..6b558fec7 100644
--- a/go.sum
+++ b/go.sum
@@ -144,8 +144,8 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/posener/complete v1.1.1/go.mod h1:em0nMJCgc9GFtwrmVmEMR/ZL6WyhyjMBndrE9hABlRI=
 github.com/rhnvrm/simples3 v0.6.1/go.mod h1:Y+3vYm2V7Y4VijFoJHHTrja6OgPrJ2cBti8dPGkC3sA=
-github.com/rhnvrm/simples3 v0.7.0 h1:KSEuKw0eGC5vltLW8ChLvjko+aUr0HbGet+bZHdwfMo=
-github.com/rhnvrm/simples3 v0.7.0/go.mod h1:Y+3vYm2V7Y4VijFoJHHTrja6OgPrJ2cBti8dPGkC3sA=
+github.com/rhnvrm/simples3 v0.8.0 h1:SAjJtsqObltKkejIGl3WgyySq2xdrfwZWXi6njFluuA=
+github.com/rhnvrm/simples3 v0.8.0/go.mod h1:Y+3vYm2V7Y4VijFoJHHTrja6OgPrJ2cBti8dPGkC3sA=
 github.com/ryanuber/columnize v2.1.0+incompatible/go.mod h1:sm1tb6uqfes/u+d4ooFouqFdy9/2g9QGwK3SQygK0Ts=
 github.com/ryanuber/go-glob v1.0.0/go.mod h1:807d1WSdnB0XRJzKNil9Om6lcp/3a0v4qIHxIXzX/Yc=
 github.com/shopspring/decimal v1.2.0 h1:abSATXmQEYyShuxI4/vyW3tV1MrKAJzCZ/0zLUXYbsQ=
diff --git a/internal/media/providers/s3/s3.go b/internal/media/providers/s3/s3.go
index 12ee59714..42b5bb35a 100644
--- a/internal/media/providers/s3/s3.go
+++ b/internal/media/providers/s3/s3.go
@@ -76,7 +76,7 @@ func (c *Client) Put(name string, cType string, file io.ReadSeeker) (string, err
 	}
 
 	// Upload.
-	if _, err := c.s3.FileUpload(p); err != nil {
+	if _, err := c.s3.FilePut(p); err != nil {
 		return "", err
 	}
 	return name, nil
diff --git a/models/models.go b/models/models.go
index db24fe6c2..be7d30d9a 100644
--- a/models/models.go
+++ b/models/models.go
@@ -15,6 +15,7 @@ import (
 	"github.com/jmoiron/sqlx/types"
 	"github.com/lib/pq"
 	"github.com/yuin/goldmark"
+	"github.com/yuin/goldmark/parser"
 	"github.com/yuin/goldmark/extension"
 	"github.com/yuin/goldmark/renderer/html"
 	null "gopkg.in/volatiletech/null.v6"
@@ -266,6 +267,9 @@ type Bounce struct {
 
 // markdown is a global instance of Markdown parser and renderer.
 var markdown = goldmark.New(
+	goldmark.WithParserOptions(
+		parser.WithAutoHeadingID(),
+	),
 	goldmark.WithRendererOptions(
 		html.WithXHTML(),
 		html.WithUnsafe(),