diff --git a/Gemfile b/Gemfile
index ebfc313f9..b53c139bd 100644
--- a/Gemfile
+++ b/Gemfile
@@ -32,7 +32,6 @@ gem 'discard'
 gem 'dotenv-rails', require: 'dotenv/rails-now' # dotenv should always be loaded before rails
 gem 'dry-monads'
 gem 'elastic-apm'
-gem 'faraday-jwt'
 gem 'flipper'
 gem 'flipper-active_record'
 gem 'flipper-ui'
diff --git a/Gemfile.lock b/Gemfile.lock
index 8b03303a1..13cd7e0b2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -116,7 +116,6 @@ GEM
     axlsx_styler (1.1.0)
       activesupport (>= 3.1)
       caxlsx (>= 2.0.2)
-    base64 (0.2.0)
     bcrypt (3.1.19)
     benchmark-ips (2.12.0)
     better_html (1.0.16)
@@ -127,7 +126,7 @@ GEM
       html_tokenizer (~> 0.0.6)
       parser (>= 2.4)
       smart_properties
-    bindata (2.4.15)
+    bindata (2.4.10)
     bindex (0.8.1)
     bootsnap (1.9.3)
       msgpack (~> 1.0)
@@ -175,7 +174,7 @@ GEM
     css_parser (1.9.0)
       addressable
     daemons (1.3.1)
-    date (3.3.4)
+    date (3.3.3)
     deep_cloneable (3.2.0)
       activerecord (>= 3.1.0, < 8)
     delayed_cron_job (0.7.4)
@@ -238,16 +237,6 @@ GEM
     excon (0.102.0)
     factory_bot (6.1.0)
       activesupport (>= 5.0.0)
-    faraday (2.7.12)
-      base64
-      faraday-net_http (>= 2.0, < 3.1)
-      ruby2_keywords (>= 0.0.4)
-    faraday-follow_redirects (0.3.0)
-      faraday (>= 1, < 3)
-    faraday-jwt (0.1.0)
-      faraday (~> 2.0)
-      json-jwt (~> 1.16)
-    faraday-net_http (3.0.2)
     ffi (1.16.3)
     ffi-compiler (1.0.1)
       ffi (>= 1.0.0)
@@ -336,6 +325,7 @@ GEM
       domain_name (~> 0.5)
     http-form_data (2.3.0)
     http_accept_language (2.1.1)
+    httpclient (2.8.3)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
     i18n-tasks (1.0.9)
@@ -364,12 +354,10 @@ GEM
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
     json (2.5.1)
-    json-jwt (1.16.3)
+    json-jwt (1.13.0)
       activesupport (>= 4.2)
       aes_key_wrap
       bindata
-      faraday (~> 2.0)
-      faraday-follow_redirects
     json_schemer (0.2.17)
       ecma-re-validator (~> 0.3)
       hana (~> 1.3)
@@ -445,14 +433,14 @@ GEM
     multi_json (1.15.0)
     mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
-    net-imap (0.4.7)
+    net-imap (0.3.7)
       date
       net-protocol
     net-pop (0.1.2)
       net-protocol
-    net-protocol (0.2.2)
+    net-protocol (0.2.1)
       timeout
-    net-smtp (0.4.0)
+    net-smtp (0.3.3)
       net-protocol
     netrc (0.11.0)
     nio4r (2.5.9)
@@ -460,19 +448,16 @@ GEM
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
     open4 (1.3.4)
-    openid_connect (2.2.0)
+    openid_connect (1.3.0)
       activemodel
       attr_required (>= 1.0.0)
-      faraday (~> 2.0)
-      faraday-follow_redirects
-      json-jwt (>= 1.16)
-      net-smtp
-      rack-oauth2 (~> 2.2)
-      swd (~> 2.0)
+      json-jwt (>= 1.5.0)
+      rack-oauth2 (>= 1.6.1)
+      swd (>= 1.0.0)
       tzinfo
       validate_email
       validate_url
-      webfinger (~> 2.0)
+      webfinger (>= 1.0.1)
     orm_adapter (0.5.0)
     parallel (1.23.0)
     parsby (1.1.1)
@@ -506,7 +491,7 @@ GEM
       pry (>= 0.13, < 0.15)
     pry-rails (0.3.9)
       pry (>= 0.10.4)
-    public_suffix (5.0.4)
+    public_suffix (5.0.3)
     puma (6.3.1)
       nio4r (~> 2.0)
     pundit (2.2.0)
@@ -518,11 +503,10 @@ GEM
       rack (>= 1.0, < 3)
     rack-mini-profiler (3.0.0)
       rack (>= 1.2.0)
-    rack-oauth2 (2.2.0)
+    rack-oauth2 (1.19.0)
       activesupport
       attr_required
-      faraday (~> 2.0)
-      faraday-follow_redirects
+      httpclient
       json-jwt (>= 1.11.0)
       rack (>= 2.1.0)
     rack-protection (3.0.5)
@@ -739,11 +723,10 @@ GEM
     stackprof (0.2.21)
     strong_migrations (0.8.0)
       activerecord (>= 5.2)
-    swd (2.0.2)
+    swd (1.3.0)
       activesupport (>= 3)
       attr_required (>= 0.0.5)
-      faraday (~> 2.0)
-      faraday-follow_redirects
+      httpclient (>= 2.4)
     sysexits (1.2.0)
     temple (0.8.2)
     terminal-table (3.0.2)
@@ -752,7 +735,7 @@ GEM
     thread_safe (0.3.6)
     tilt (2.0.11)
     timecop (0.9.4)
-    timeout (0.4.1)
+    timeout (0.4.0)
     ttfunk (1.7.0)
     turbo-rails (1.3.2)
       actionpack (>= 6.0.0)
@@ -771,7 +754,7 @@ GEM
     validate_email (0.1.6)
       activemodel (>= 3.0)
       mail (>= 2.2.5)
-    validate_url (1.0.15)
+    validate_url (1.0.13)
       activemodel (>= 3.0.0)
       public_suffix
     vcr (6.1.0)
@@ -797,10 +780,9 @@ GEM
       activemodel (>= 6.0.0)
       bindex (>= 0.4.0)
       railties (>= 6.0.0)
-    webfinger (2.1.2)
+    webfinger (1.2.0)
       activesupport
-      faraday (~> 2.0)
-      faraday-follow_redirects
+      httpclient (>= 2.4)
     webmock (3.11.2)
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
@@ -867,7 +849,6 @@ DEPENDENCIES
   dry-monads
   elastic-apm
   factory_bot
-  faraday-jwt
   flipper
   flipper-active_record
   flipper-ui
diff --git a/app/services/agent_connect_service.rb b/app/services/agent_connect_service.rb
index 20812df61..bb41170d0 100644
--- a/app/services/agent_connect_service.rb
+++ b/app/services/agent_connect_service.rb
@@ -13,8 +13,8 @@ class AgentConnectService
 
     uri = client.authorization_uri(
       scope: [:openid, :email],
-      state:,
-      nonce:,
+      state: state,
+      nonce: nonce,
       acr_values: 'eidas1'
     )
 
diff --git a/config/env.example b/config/env.example
index b449c23e9..a3624b572 100644
--- a/config/env.example
+++ b/config/env.example
@@ -56,6 +56,7 @@ FC_PARTICULIER_BASE_URL=""
 AGENT_CONNECT_ID=""
 AGENT_CONNECT_SECRET=""
 AGENT_CONNECT_BASE_URL=""
+AGENT_CONNECT_JWKS=""
 AGENT_CONNECT_REDIRECT=""
 
 # External service: integration with HelpScout (optional)
diff --git a/config/initializers/open_id_connect.rb b/config/initializers/open_id_connect.rb
index 0a3627a39..5266653b8 100644
--- a/config/initializers/open_id_connect.rb
+++ b/config/initializers/open_id_connect.rb
@@ -1,3 +1,61 @@
-OpenIDConnect.http_config do |config|
-  config.response :jwt
+OpenIDConnect.debug!
+OpenIDConnect.logger = Rails.logger
+Rack::OAuth2.logger = Rails.logger
+# Webfinger.logger = Rails.logger
+SWD.logger = Rails.logger
+
+# the openid_connect gem does not support
+# jwt format in the userinfo call.
+# A PR is open to improve the situation
+# https://github.com/nov/openid_connect/pull/54
+module OpenIDConnect
+  class AccessToken < Rack::OAuth2::AccessToken::Bearer
+    private
+
+    def jwk_loader
+      JSON.parse(URI.parse(ENV['AGENT_CONNECT_JWKS']).read).deep_symbolize_keys
+    end
+
+    def decode_jwt(requested_host, jwt)
+      agent_connect_host = URI.parse(ENV['AGENT_CONNECT_BASE_URL']).host
+
+      if requested_host == agent_connect_host
+        # rubocop:disable Lint/UselessAssignment
+        JWT.decode(jwt, key = nil, verify = true, { algorithms: ['ES256'], jwks: jwk_loader })[0]
+        # rubocop:enable Lint/UselessAssignment
+      else
+        raise "unknwon host : #{requested_host}"
+      end
+    end
+
+    def resource_request
+      res = yield
+      case res.status
+      when 200
+        hash = case parse_type_and_subtype(res.content_type)
+        when 'application/jwt'
+          requested_host = URI.parse(client.userinfo_endpoint).host
+          decode_jwt(requested_host, res.body)
+        when 'application/json'
+          JSON.parse(res.body)
+        end
+        hash&.with_indifferent_access
+      when 400
+        raise BadRequest.new('API Access Faild', res)
+      when 401
+        raise Unauthorized.new('Access Token Invalid or Expired', res)
+      when 403
+        raise Forbidden.new('Insufficient Scope', res)
+      else
+        raise HttpError.new(res.status, 'Unknown HttpError', res)
+      end
+    end
+
+    # https://datatracker.ietf.org/doc/html/rfc2045#section-5.1
+    # - type and subtype are the first member
+    # they are case insensitive
+    def parse_type_and_subtype(content_type)
+      content_type.split(';')[0].strip.downcase
+    end
+  end
 end