diff --git a/CHANGELOG.md b/CHANGELOG.md
index 96182da0..839c128e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,12 @@
+## [0.3.1] - 2022-04-02
+
+### Changed
+- The default git branch is now `main` and not `master` (thanks to @nyurik).
+- Upgrades RocksDB to v7.0.4.
+- Limits the number of bulk loader threads to at most 4 (allows bigger BTree chunks and a better data layout).
+- Limits the number of files opened by RocksDB to the soft file descriptor limit minus 48.
+
+
 ## [0.3.0] - 2022-03-19
 
 ### Changed
@@ -8,7 +17,7 @@
 ## [0.3.0-rc.1] - 2022-03-14
 
 ### Added
-- The bulk loader now check available memory and tries to increase its batch size to make use of it.
+- The bulk loader now checks available memory and tries to increase its batch size to make use of it.
 - The Bulk loader provides now a `--lenient` option to keep loading a file even if invalid data is found (works only with N-Triples and N-Quads). 
   This behavior can be customised in the Rust API using the `BulkLoader::on_parse_error` method.
 
diff --git a/Cargo.lock b/Cargo.lock
index 0163c782..1950a313 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -791,7 +791,7 @@ dependencies = [
 
 [[package]]
 name = "oxigraph"
-version = "0.3.0"
+version = "0.3.1"
 dependencies = [
  "criterion",
  "digest",
@@ -824,7 +824,7 @@ dependencies = [
 
 [[package]]
 name = "oxigraph_js"
-version = "0.3.0"
+version = "0.3.1"
 dependencies = [
  "console_error_panic_hook",
  "js-sys",
@@ -835,7 +835,7 @@ dependencies = [
 
 [[package]]
 name = "oxigraph_server"
-version = "0.3.0"
+version = "0.3.1"
 dependencies = [
  "clap 3.1.8",
  "flate2",
@@ -849,7 +849,7 @@ dependencies = [
 
 [[package]]
 name = "oxigraph_testsuite"
-version = "0.3.0"
+version = "0.3.1"
 dependencies = [
  "anyhow",
  "clap 3.1.8",
@@ -883,7 +883,7 @@ dependencies = [
 
 [[package]]
 name = "oxrocksdb-sys"
-version = "0.3.0"
+version = "0.3.1"
 dependencies = [
  "bindgen",
  "cc",
@@ -1082,7 +1082,7 @@ dependencies = [
 
 [[package]]
 name = "pyoxigraph"
-version = "0.3.0"
+version = "0.3.1"
 dependencies = [
  "oxigraph",
  "pyo3",
diff --git a/js/Cargo.toml b/js/Cargo.toml
index 2254c44d..9dabcf2a 100644
--- a/js/Cargo.toml
+++ b/js/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "oxigraph_js"
-version = "0.3.0"
+version = "0.3.1"
 authors = ["Tpt <thomas@pellissier-tanon.fr>"]
 license = "MIT OR Apache-2.0"
 readme = "README.md"
@@ -14,7 +14,7 @@ crate-type = ["cdylib"]
 name = "oxigraph"
 
 [dependencies]
-oxigraph = { version = "0.3.0", path="../lib" }
+oxigraph = { version = "0.3.1", path="../lib" }
 wasm-bindgen = "0.2"
 js-sys = "0.3"
 console_error_panic_hook = "0.1"
diff --git a/lib/Cargo.toml b/lib/Cargo.toml
index 6696323d..0e5e77e3 100644
--- a/lib/Cargo.toml
+++ b/lib/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "oxigraph"
-version = "0.3.0"
+version = "0.3.1"
 authors = ["Tpt <thomas@pellissier-tanon.fr>"]
 license = "MIT OR Apache-2.0"
 readme = "README.md"
@@ -43,7 +43,7 @@ sparesults = { version = "0.1.0", path="sparesults", features = ["rdf-star"] }
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
 libc = "0.2"
-oxrocksdb-sys = { version = "0.3.0", path="../oxrocksdb-sys" }
+oxrocksdb-sys = { version = "0.3.1", path="../oxrocksdb-sys" }
 oxhttp = { version = "0.1", optional = true }
 
 [target.'cfg(target_arch = "wasm32")'.dependencies]
diff --git a/oxrocksdb-sys/Cargo.toml b/oxrocksdb-sys/Cargo.toml
index 7e37759d..471a9ccc 100644
--- a/oxrocksdb-sys/Cargo.toml
+++ b/oxrocksdb-sys/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "oxrocksdb-sys"
-version = "0.3.0"
+version = "0.3.1"
 authors = ["Tpt <thomas@pellissier-tanon.fr>"]
 license = "GPL-2.0 OR Apache-2.0"
 repository = "https://github.com/oxigraph/oxigraph/tree/main/oxrocksdb-sys"
diff --git a/python/Cargo.toml b/python/Cargo.toml
index 641a7b67..31ac4535 100644
--- a/python/Cargo.toml
+++ b/python/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pyoxigraph"
-version = "0.3.0"
+version = "0.3.1"
 authors = ["Tpt"]
 license = "MIT OR Apache-2.0"
 readme = "README.md"
@@ -16,5 +16,5 @@ name = "pyoxigraph"
 doctest = false
 
 [dependencies]
-oxigraph = { version = "0.3.0", path="../lib", features = ["http_client"] }
+oxigraph = { version = "0.3.1", path="../lib", features = ["http_client"] }
 pyo3 = { version = "0.16", features = ["extension-module", "abi3-py37"] }
diff --git a/server/Cargo.toml b/server/Cargo.toml
index c77bd712..991d9a19 100644
--- a/server/Cargo.toml
+++ b/server/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "oxigraph_server"
-version = "0.3.0"
+version = "0.3.1"
 authors = ["Tpt <thomas@pellissier-tanon.fr>"]
 license = "MIT OR Apache-2.0"
 readme = "README.md"
@@ -14,7 +14,7 @@ edition = "2021"
 [dependencies]
 oxhttp = { version = "0.1", features = ["rayon"] }
 clap = { version = "3", features = ["derive"] }
-oxigraph = { version = "0.3.0", path = "../lib", features = ["http_client"] }
+oxigraph = { version = "0.3.1", path = "../lib", features = ["http_client"] }
 sparesults = { version = "0.1.0", path = "../lib/sparesults", features = ["rdf-star"] }
 rand = "0.8"
 url = "2"
diff --git a/testsuite/Cargo.toml b/testsuite/Cargo.toml
index 53965d3b..2bc2441d 100644
--- a/testsuite/Cargo.toml
+++ b/testsuite/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "oxigraph_testsuite"
-version = "0.3.0"
+version = "0.3.1"
 authors = ["Tpt <thomas@pellissier-tanon.fr>"]
 license = "MIT OR Apache-2.0"
 readme = "../README.md"
@@ -15,7 +15,7 @@ publish = false
 anyhow = "1"
 clap = { version = "3", features = ["derive"] }
 time = { version = "0.3", features = ["formatting"] }
-oxigraph = { version = "0.3.0", path="../lib" }
+oxigraph = { version = "0.3.1", path="../lib" }
 text-diff = "0.4"
 
 [dev-dependencies]