diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 2f0bb9f..2ca2e89 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -8,7 +8,7 @@ repos:
         always_run: true
         pass_filenames: false
         additional_dependencies:
-          - epi2melabs>=0.0.52
+          - epi2melabs>=0.0.51
       - id: build_models
         name: build_models
         entry: datamodel-codegen --strict-nullable --base-class workflow_glue.results_schema_helpers.BaseModel --use-schema-description --disable-timestamp --input results_schema.yml --input-file-type openapi --output bin/workflow_glue/results_schema.py
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 10ae7ca..545ec52 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [unreleased]
+## [v1.0.4]
 ### Fixed
 - The workflow failing when there were tab characters in the FASTA header lines of reference sequences.
 
diff --git a/nextflow.config b/nextflow.config
index 969e091..087eddb 100644
--- a/nextflow.config
+++ b/nextflow.config
@@ -76,7 +76,7 @@ manifest {
     description     = 'Amplicon workflow'
     mainScript      = 'main.nf'
     nextflowVersion = '>=23.04.2'
-    version         = 'v1.0.3'
+    version         = 'v1.0.4'
 }
 
 epi2melabs {