diff --git a/charts/graylog/Chart.lock b/charts/graylog/Chart.lock
index 19d7192db8bda174c81803af38f0ffe22b24b73c..13c3660da7e16f54ec37c1036c8f80db38286a47 100644
--- a/charts/graylog/Chart.lock
+++ b/charts/graylog/Chart.lock
@@ -1,9 +1,9 @@
 dependencies:
 - name: mongodb
   repository: https://groundhog2k.github.io/helm-charts
-  version: 0.3.8
+  version: 0.3.9
 - name: elasticsearch
   repository: https://groundhog2k.github.io/helm-charts
   version: 0.1.106
-digest: sha256:2e971ea4ad8d77c74638d19909358b6c5051c6d06c4c56456e5429ab5db00eed
-generated: "2022-01-22T14:15:33.2979728+01:00"
+digest: sha256:df554ca0271ee43108a0f6a42da5206763e464500c5fc2f060d5d9d1713b1feb
+generated: "2022-02-06T11:44:17.6803387+01:00"
diff --git a/charts/graylog/Chart.yaml b/charts/graylog/Chart.yaml
index bf052f76d72e02e938da3609f50b0d0ffdb42cf3..f8e272d915f6fa3aa49f6d52d1c00e06038db39a 100644
--- a/charts/graylog/Chart.yaml
+++ b/charts/graylog/Chart.yaml
@@ -7,13 +7,13 @@ type: application
 maintainers:
   - name: groundhog2k
 
-version: 0.3.11
+version: 0.3.12
 
 appVersion: "4.2.6-jre11"
 
 dependencies:
   - name: mongodb
-    version: 0.3.8
+    version: 0.3.9
     repository: "https://groundhog2k.github.io/helm-charts"
     condition: mongodb.enabled
   - name: elasticsearch
diff --git a/charts/graylog/README.md b/charts/graylog/README.md
index e8beaad14afd4c8d8122758d4fce464200c3e0f4..6d6f31b0a02c278ef980140d84a37037bd5bc763 100644
--- a/charts/graylog/README.md
+++ b/charts/graylog/README.md
@@ -1,6 +1,6 @@
 # Graylog
 
-![Version: 0.3.11](https://img.shields.io/badge/Version-0.3.11-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 4.2.6](https://img.shields.io/badge/AppVersion-4.2.6-informational?style=flat-square)
+![Version: 0.3.12](https://img.shields.io/badge/Version-0.3.12-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 4.2.6](https://img.shields.io/badge/AppVersion-4.2.6-informational?style=flat-square)
 
 ## Changelog
 
@@ -45,7 +45,7 @@ helm uninstall my-release
 
 | Repository | Name | Version |
 |------------|------|---------|
-| @groundhog2k | mongodb | 0.3.8 |
+| @groundhog2k | mongodb | 0.3.9 |
 | @groundhog2k | elasticsearch | 0.1.106 |
 
 ## Common parameters
diff --git a/charts/graylog/RELEASENOTES.md b/charts/graylog/RELEASENOTES.md
index 15b7e8e787dbe7aaa0861aa6fb54599f27dc0bec..d5a772e91eb47cd1acb67306536f740f414dd953 100644
--- a/charts/graylog/RELEASENOTES.md
+++ b/charts/graylog/RELEASENOTES.md
@@ -6,4 +6,5 @@
 | 0.3.9 | 4.2.5-jre11 | Fixed startupProbe |
 | 0.3.10 | 4.2.5-jre11 | Updated chart dependencies |
 | 0.3.11 | 4.2.6-jre11 | Updated chart for Graylog 4.2.6 |
+| 0.3.12 | 4.2.6-jre11 | Updated mongodb chart dependency to 0.3.9 (MongoDB 4.4.12) |
 | | | |
diff --git a/charts/graylog/charts/mongodb-0.3.8.tgz b/charts/graylog/charts/mongodb-0.3.8.tgz
deleted file mode 100644
index 4e6179371e00eb59408c0912e2b39f1b36e7d4ab..0000000000000000000000000000000000000000
Binary files a/charts/graylog/charts/mongodb-0.3.8.tgz and /dev/null differ
diff --git a/charts/graylog/charts/mongodb-0.3.9.tgz b/charts/graylog/charts/mongodb-0.3.9.tgz
new file mode 100644
index 0000000000000000000000000000000000000000..53b9681fccc5dcc43c84e987ad41662d15fec64a
Binary files /dev/null and b/charts/graylog/charts/mongodb-0.3.9.tgz differ