diff --git a/CHANGES.md b/CHANGES.md
index ad370269..5ac543a1 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,7 @@
+## [2.0.0] - 2021-10-04
+### Changed
+- Added the concept of a service context `ctx` which can be used for configuration that is valid for one function call only.
+
 ## [1.0.1] - 2021-09-17
 ### Added
 - Support `multipart/form-data` in CSRF middleware
diff --git a/dune-project b/dune-project
index 01029c9d..f05c7bc7 100644
--- a/dune-project
+++ b/dune-project
@@ -2,7 +2,7 @@
 (generate_opam_files true)
 
 (name sihl)
-(version 1.0.1)
+(version 2.0.0)
 
 (authors
   "Josef Erben"
diff --git a/sihl-cache.opam b/sihl-cache.opam
index f9649df9..ae6e4b56 100644
--- a/sihl-cache.opam
+++ b/sihl-cache.opam
@@ -1,6 +1,6 @@
 # This file is generated by dune, edit dune-project instead
 opam-version: "2.0"
-version: "1.0.1"
+version: "2.0.0"
 synopsis: "Cache service implementations for Sihl"
 description: "A key-value store with support for PostgreSQL and MariaDB."
 maintainer: ["josef@oxidizing.io"]
diff --git a/sihl-cache.opam.locked b/sihl-cache.opam.locked
index dbb28c90..0eb5861e 100644
--- a/sihl-cache.opam.locked
+++ b/sihl-cache.opam.locked
@@ -1,5 +1,5 @@
 opam-version: "2.0"
-version: "1.0.0"
+version: "2.0.0"
 synopsis: "Cache service implementations for Sihl"
 description: "A key-value store with support for PostgreSQL and MariaDB."
 maintainer: ["josef@oxidizing.io"]
diff --git a/sihl-email.opam b/sihl-email.opam
index 331eda29..b59575ce 100644
--- a/sihl-email.opam
+++ b/sihl-email.opam
@@ -1,6 +1,6 @@
 # This file is generated by dune, edit dune-project instead
 opam-version: "2.0"
-version: "1.0.1"
+version: "2.0.0"
 synopsis: "Email service implementations for Sihl"
 description: "Modules for sending emails using Lwt and SMTP or Sendgrid."
 maintainer: ["josef@oxidizing.io"]
diff --git a/sihl-email.opam.locked b/sihl-email.opam.locked
index ecd8d804..d64ea1a6 100644
--- a/sihl-email.opam.locked
+++ b/sihl-email.opam.locked
@@ -1,5 +1,5 @@
 opam-version: "2.0"
-version: "1.0.0"
+version: "2.0.0"
 synopsis: "Email service implementations for Sihl"
 description: "Modules for sending emails using Lwt and SMTP or Sendgrid."
 maintainer: ["josef@oxidizing.io"]
@@ -20,6 +20,7 @@ depends: [
   "bigarray-compat" {= "1.0.0"}
   "bigarray-overlap" {= "0.2.0"}
   "bigstringaf" {= "0.8.0"}
+  "biniou" {= "1.2.1"}
   "bos" {= "0.2.0"}
   "ca-certs" {= "0.2.1"}
   "cmdliner" {= "1.0.4"}
@@ -44,6 +45,7 @@ depends: [
   "dune" {= "2.9.0"}
   "dune-configurator" {= "2.9.0"}
   "duration" {= "0.2.0"}
+  "easy-format" {= "1.3.2"}
   "emile" {= "1.1"}
   "eqaf" {= "0.8"}
   "fmt" {= "0.8.9"}
@@ -52,6 +54,8 @@ depends: [
   "hkdf" {= "1.0.4"}
   "ipaddr" {= "5.1.0"}
   "ipaddr-sexp" {= "5.1.0"}
+  "js_of_ocaml" {= "3.9.0"}
+  "js_of_ocaml-compiler" {= "3.9.1"}
   "jsonm" {= "1.0.1"}
   "ke" {= "0.4"}
   "letters" {= "0.2.1"}
@@ -109,6 +113,7 @@ depends: [
   "uutf" {= "1.0.2"}
   "uuuu" {= "0.2.0"}
   "x509" {= "0.14.1"}
+  "yojson" {= "1.7.0"}
   "yuscii" {= "0.3.0"}
   "zarith" {= "1.12"}
 ]
diff --git a/sihl-queue.opam b/sihl-queue.opam
index c3a0ae5f..a36e17a0 100644
--- a/sihl-queue.opam
+++ b/sihl-queue.opam
@@ -1,6 +1,6 @@
 # This file is generated by dune, edit dune-project instead
 opam-version: "2.0"
-version: "1.0.1"
+version: "2.0.0"
 synopsis: "Queue service implementations for Sihl"
 description:
   "Modules for running tasks in the background on a persistent queue."
diff --git a/sihl-queue.opam.locked b/sihl-queue.opam.locked
index 54f9dd10..e2756c9a 100644
--- a/sihl-queue.opam.locked
+++ b/sihl-queue.opam.locked
@@ -1,5 +1,5 @@
 opam-version: "2.0"
-version: "1.0.0"
+version: "2.0.0"
 synopsis: "Queue service implementations for Sihl"
 description:
   "Modules for running tasks in the background on a persistent queue."
diff --git a/sihl-storage.opam b/sihl-storage.opam
index 336ecde0..3a1e8a3e 100644
--- a/sihl-storage.opam
+++ b/sihl-storage.opam
@@ -1,6 +1,6 @@
 # This file is generated by dune, edit dune-project instead
 opam-version: "2.0"
-version: "1.0.1"
+version: "2.0.0"
 synopsis: "Storage service implementations for Sihl"
 description:
   "Modules for storing large binary blobs using either PostgreSQL or MariaDB."
diff --git a/sihl-storage.opam.locked b/sihl-storage.opam.locked
index 45af79a1..5b1dbc4e 100644
--- a/sihl-storage.opam.locked
+++ b/sihl-storage.opam.locked
@@ -1,5 +1,5 @@
 opam-version: "2.0"
-version: "1.0.0"
+version: "2.0.0"
 synopsis: "Storage service implementations for Sihl"
 description:
   "Modules for storing large binary blobs using either PostgreSQL or MariaDB."
diff --git a/sihl-token.opam b/sihl-token.opam
index 4a4ab2a4..30ad95eb 100644
--- a/sihl-token.opam
+++ b/sihl-token.opam
@@ -1,6 +1,6 @@
 # This file is generated by dune, edit dune-project instead
 opam-version: "2.0"
-version: "1.0.1"
+version: "2.0.0"
 synopsis: "Token service implementations for Sihl"
 description:
   "Modules for token handling with support for JWT blacklisting and server-side stored tokens using PostgreSQL and MariaDB."
diff --git a/sihl-token.opam.locked b/sihl-token.opam.locked
index dd8fba7e..9da1b85d 100644
--- a/sihl-token.opam.locked
+++ b/sihl-token.opam.locked
@@ -1,5 +1,5 @@
 opam-version: "2.0"
-version: "1.0.0"
+version: "2.0.0"
 synopsis: "Token service implementations for Sihl"
 description:
   "Modules for token handling with support for JWT blacklisting and server-side stored tokens using PostgreSQL and MariaDB."
diff --git a/sihl-user.opam b/sihl-user.opam
index 22bf9746..e9533f3c 100644
--- a/sihl-user.opam
+++ b/sihl-user.opam
@@ -1,6 +1,6 @@
 # This file is generated by dune, edit dune-project instead
 opam-version: "2.0"
-version: "1.0.1"
+version: "2.0.0"
 synopsis: "User service implementations for Sihl"
 description:
   "Modules for user management and password reset workflows with support for PostgreSQL and MariaDB."
diff --git a/sihl-user.opam.locked b/sihl-user.opam.locked
index e0088fb7..469e92ab 100644
--- a/sihl-user.opam.locked
+++ b/sihl-user.opam.locked
@@ -1,5 +1,5 @@
 opam-version: "2.0"
-version: "1.0.0"
+version: "2.0.0"
 synopsis: "User service implementations for Sihl"
 description:
   "Modules for user management and password reset workflows with support for PostgreSQL and MariaDB."
diff --git a/sihl.opam b/sihl.opam
index 4bb805b2..f3c27db8 100644
--- a/sihl.opam
+++ b/sihl.opam
@@ -1,6 +1,6 @@
 # This file is generated by dune, edit dune-project instead
 opam-version: "2.0"
-version: "1.0.1"
+version: "2.0.0"
 synopsis: "The Sihl web framework"
 description: """
 
diff --git a/sihl.opam.locked b/sihl.opam.locked
index 8f4b177b..11e354ab 100644
--- a/sihl.opam.locked
+++ b/sihl.opam.locked
@@ -1,5 +1,5 @@
 opam-version: "2.0"
-version: "1.0.0"
+version: "2.0.0"
 synopsis: "The Sihl web framework"
 description: """
 
@@ -58,12 +58,17 @@ depends: [
   "hmap" {= "0.8.1"}
   "httpaf" {= "0.7.1"}
   "httpaf-lwt-unix" {= "0.7.1"}
+  "js_of_ocaml" {= "3.9.0"}
+  "js_of_ocaml-compiler" {= "3.9.1"}
   "jwto" {= "0.3.0"}
   "logs" {= "0.7.0"}
   "lwt" {= "5.4.2"}
   "lwt_ppx" {= "2.0.2"}
   "lwt_ssl" {= "1.1.3"}
   "magic-mime" {= "1.2.0"}
+  "menhir" {= "20210419"}
+  "menhirLib" {= "20210419"}
+  "menhirSdk" {= "20210419"}
   "mirage-crypto" {= "0.10.3"}
   "mirage-crypto-ec" {= "0.10.3"}
   "mirage-crypto-pk" {= "0.10.3"}