Bump versions for 3.21.

Author: pinin4fjords

.nf-core.yml

@@ -1,15 +1,15 @@
 lint:
   files_exist:
-    - conf/modules.config
+  - conf/modules.config
   files_unchanged:
-    - assets/email_template.html
-    - assets/email_template.txt
-    - .gitignore
+  - assets/email_template.html
+  - assets/email_template.txt
+  - .gitignore
   modules_config: false
   multiqc_config: false
   nextflow_config:
-    - config_defaults:
-        - params.ribo_database_manifest
+  - config_defaults:
+    - params.ribo_database_manifest
 nf_core_version: 3.3.2
 repository_type: pipeline
 template:
@@ -21,4 +21,4 @@ template:
   name: rnaseq
   org: nf-core
   outdir: .
-  version: 3.21.0dev
+  version: 3.21.0

CHANGELOG.md

@@ -3,13 +3,16 @@
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## dev
+## [[3.21.0](https://github.com/nf-core/rnaseq/releases/tag/3.21.0)] - 2025-09-18
 
 ### Credits
 
 Special thanks to the following for their contributions to the release:
 
+- [Edmund Miller](https://github.com/edmundmiller)
+- [Friederike Hanssen](https://github.com/friederikehanssen)
 - [Maxime Garcia](https://github.com/maxulysse)
+- [Jonathan Manning](https://github.com/pinin4fjords)
 
 ### Enhancements & fixes
 
@@ -18,6 +21,12 @@ Special thanks to the following for their contributions to the release:
 - [PR #1604](https://github.com/nf-core/rnaseq/pull/1604) - Enable BAM input for RSEM
 - [PR #1605](https://github.com/nf-core/rnaseq/pull/1605) - Fix default for umi_discard_read to prevent validation errors in Platform
 
+### Software dependencies
+
+| Dependency | Old version | New version |
+| ---------- | ----------- | ----------- |
+| `MultiQC`  | 1.30        | 1.31        |
+
 ## [[3.20.0](https://github.com/nf-core/rnaseq/releases/tag/3.20.0)] - 2025-08-18
 
 ### Credits

nextflow.config

@@ -421,7 +421,7 @@ manifest {
     mainScript      = 'main.nf'
     defaultBranch   = 'master'
     nextflowVersion = '!>=24.10.5'
-    version         = '3.21.0dev'
+    version         = '3.21.0'
     doi             = 'https://doi.org/10.5281/zenodo.1400710'
 }