diff --git a/CHANGELOG.md b/CHANGELOG.md
index e1cf3c5bd..25a2d8379 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,13 @@
+# 0.4.21
+* FI-2075: Input validation by @AlyssaWang in https://github.com/inferno-framework/inferno-core/pull/388
+* FI-2003: Fix Codecov flag settings by @AlyssaWang in https://github.com/inferno-framework/inferno-core/pull/394
+* FI-2166: improve validator error handling without changing API by @dehall in https://github.com/inferno-framework/inferno-core/pull/397
+* FI-2198 Markdown processing added to group level by @360dgries in https://github.com/inferno-framework/inferno-core/pull/399
+* FI-2015 GET requests added to fhir_operation by @360dgries in https://github.com/inferno-framework/inferno-core/pull/380
+* Fix npm install that fails due to wrong checksum in package-lock. by @arscan in https://github.com/inferno-framework/inferno-core/pull/400
+* Added Documentation for Windows by @360dgries in https://github.com/inferno-framework/inferno-core/pull/375
+* g10 preset updated with new bulk token endpoint by @rpassas
+
 # 0.4.20
 * FI-2077: Improve colors and contrasts for a11y by @AlyssaWang in
   https://github.com/inferno-framework/inferno-core/pull/392
diff --git a/Gemfile.lock b/Gemfile.lock
index eb650b291..d58cc00b8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    inferno_core (0.4.20)
+    inferno_core (0.4.21)
       activesupport (~> 6.1.7.5)
       base62-rb (= 0.3.1)
       blueprinter (= 0.25.2)
@@ -178,7 +178,7 @@ GEM
     kramdown (2.4.0)
       rexml
     method_source (1.0.0)
-    mime-types (3.5.1)
+    mime-types (3.4.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2023.0808)
     minitest (5.18.0)
@@ -235,7 +235,7 @@ GEM
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
     rexml (3.2.5)
-    rouge (4.1.3)
+    rouge (4.2.0)
     rspec (3.11.0)
       rspec-core (~> 3.11.0)
       rspec-expectations (~> 3.11.0)
@@ -269,7 +269,7 @@ GEM
     ruby-progressbar (1.11.0)
     ruby2_keywords (0.0.5)
     sequel (5.42.0)
-    sidekiq (6.5.9)
+    sidekiq (6.5.12)
       connection_pool (>= 2.2.5, < 3)
       rack (~> 2.0)
       redis (>= 4.5.0, < 5)
@@ -282,16 +282,16 @@ GEM
       simplecov (~> 0.19)
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.3)
-    sqlite3 (1.6.6-arm64-darwin)
-    sqlite3 (1.6.6-x86_64-darwin)
-    sqlite3 (1.6.6-x86_64-linux)
+    sqlite3 (1.6.7-arm64-darwin)
+    sqlite3 (1.6.7-x86_64-darwin)
+    sqlite3 (1.6.7-x86_64-linux)
     strings (0.2.1)
       strings-ansi (~> 0.2)
       unicode-display_width (>= 1.5, < 3.0)
       unicode_utils (~> 1.4)
     strings-ansi (0.2.0)
     thor (1.2.2)
-    tilt (2.2.0)
+    tilt (2.3.0)
     tty-color (0.6.0)
     tty-markdown (0.7.2)
       kramdown (>= 1.16.2, < 3.0)
diff --git a/config/presets/g10_certification_preset.json.erb b/config/presets/g10_certification_preset.json.erb
index 12cf3c022..21dd79bee 100644
--- a/config/presets/g10_certification_preset.json.erb
+++ b/config/presets/g10_certification_preset.json.erb
@@ -72,7 +72,7 @@
       "type": "text",
       "title": "Backend Services Token Endpoint",
       "description": "The OAuth 2.0 Token Endpoint used by the Backend Services specification\n                        to provide bearer tokens.",
-      "value": "https://inferno.healthit.gov/reference-server/oauth/bulk-token"
+      "value": "https://inferno.healthit.gov/reference-server/oauth/token"
     },
     {
       "name": "bulk_client_id",
diff --git a/lib/inferno/version.rb b/lib/inferno/version.rb
index 5eaa87402..f9b735af1 100644
--- a/lib/inferno/version.rb
+++ b/lib/inferno/version.rb
@@ -1,4 +1,4 @@
 module Inferno
   # Standard patterns for gem versions: https://guides.rubygems.org/patterns/
-  VERSION = '0.4.20'.freeze
+  VERSION = '0.4.21'.freeze
 end