diff --git a/.nf-core.yml b/.nf-core.yml
index 5d193256..f945d00c 100644
--- a/.nf-core.yml
+++ b/.nf-core.yml
@@ -18,5 +18,5 @@ template:
   org: nf-core
   outdir: .
   skip_features: null
-  version: 3.2.0
+  version: 3.2.1
 update: null
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 43c68211..f7b929e3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,20 @@
 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).
 
+## 3.2.1 [2024-10-30]
+
+### `Added`
+
+### `Changed`
+
+### `Fixed`
+
+- [#707](https://github.com/nf-core/mag/pull/674) - Fix missing space resulting in malformed args for MEGAHIT (reported by @d4straub, fix by @jfy133)
+
+### `Dependencies`
+
+### `Deprecated`
+
 ## 3.2.0 [2024-10-27]
 
 ### `Added`
diff --git a/assets/multiqc_config.yml b/assets/multiqc_config.yml
index e9da7a41..434dfa7b 100644
--- a/assets/multiqc_config.yml
+++ b/assets/multiqc_config.yml
@@ -1,7 +1,7 @@
 report_comment: >
-  This report has been generated by the <a href="https://github.com/nf-core/mag/releases/tag/3.2.0" target="_blank">nf-core/mag</a>
+  This report has been generated by the <a href="https://github.com/nf-core/mag/releases/tag/3.2.1" target="_blank">nf-core/mag</a>
   analysis pipeline. For information about how to interpret these results, please see the
-  <a href="https://nf-co.re/mag/3.2.0/docs/output" target="_blank">documentation</a>.
+  <a href="https://nf-co.re/mag/3.2.1/docs/output" target="_blank">documentation</a>.
 report_section_order:
   "nf-core-mag-methods-description":
     order: -1000
diff --git a/conf/modules.config b/conf/modules.config
index 0fbea292..507e475f 100644
--- a/conf/modules.config
+++ b/conf/modules.config
@@ -257,7 +257,7 @@ process {
     }
 
     withName: MEGAHIT {
-        ext.args   = { params.megahit_options ? params.megahit_options + "-m ${task.memory.toBytes()}" : "-m ${task.memory.toBytes()}" }
+        ext.args   = { params.megahit_options ? params.megahit_options + " -m ${task.memory.toBytes()}" : "-m ${task.memory.toBytes()}" }
         ext.prefix = { "MEGAHIT-${meta.id}" }
         publishDir = [path: { "${params.outdir}/Assembly/MEGAHIT" }, mode: params.publish_dir_mode, pattern: "*.{fa.gz,log}"]
     }
diff --git a/nextflow.config b/nextflow.config
index 026f67d8..4c5e67fa 100644
--- a/nextflow.config
+++ b/nextflow.config
@@ -375,7 +375,7 @@ manifest {
     description     = """Assembly, binning and annotation of metagenomes"""
     mainScript      = 'main.nf'
     nextflowVersion = '!>=24.04.2'
-    version         = '3.2.0'
+    version         = '3.2.1'
     doi             = '10.1093/nargab/lqac007'
 }