diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3a9aaff1..be6026ce 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -34,13 +34,13 @@ jobs:
 
       - name: Build new docker image
         if: env.GIT_DIFF
-        run: docker build --no-cache . -t nfcore/mag:dev
+        run: docker build --no-cache . -t nfcore/mag:1.1.1
 
       - name: Pull docker image
         if: ${{ !env.GIT_DIFF }}
         run: |
           docker pull nfcore/mag:dev
-          docker tag nfcore/mag:dev nfcore/mag:dev
+          docker tag nfcore/mag:dev nfcore/mag:1.1.1
 
       - name: Check if BUSCO Dockerfile or Conda environment changed
         uses: technote-space/get-diff-action@v1
@@ -51,13 +51,13 @@ jobs:
 
       - name: Build new docker image for BUSCO
         if: env.GIT_DIFF
-        run: docker build --no-cache ./containers/busco/ -t nfcore/magbusco:dev
+        run: docker build --no-cache ./containers/busco/ -t nfcore/magbusco:1.1.1
 
       - name: Pull docker image for BUSCO
         if: ${{ !env.GIT_DIFF }}
         run: |
           docker pull nfcore/magbusco:dev
-          docker tag nfcore/magbusco:dev nfcore/magbusco:dev
+          docker tag nfcore/magbusco:dev nfcore/magbusco:1.1.1
 
       - name: Install Nextflow
         run: |
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9e4366de..65bf19f4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,7 @@
 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).
 
-## v1.2.0dev - [date]
+## v1.1.1 - 2019/11/10
 
 ### `Added`
 
diff --git a/Dockerfile b/Dockerfile
index 9d26d33f..8539fca6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,10 +7,10 @@ COPY environment.yml /
 RUN conda env create --quiet -f /environment.yml && conda clean -a
 
 # Add conda installation dir to PATH (instead of doing 'conda activate')
-ENV PATH /opt/conda/envs/nf-core-mag-1.2.0dev/bin:$PATH
+ENV PATH /opt/conda/envs/nf-core-mag-1.1.1/bin:$PATH
 
 # Dump the details of the installed packages to a file for posterity
-RUN conda env export --name nf-core-mag-1.2.0dev > nf-core-mag-1.2.0dev.yml
+RUN conda env export --name nf-core-mag-1.1.1 > nf-core-mag-1.1.1.yml
 
 # Instruct R processes to use these empty files instead of clashing with a local version
 RUN touch .Rprofile
diff --git a/conf/base.config b/conf/base.config
index b50deba1..62a80482 100644
--- a/conf/base.config
+++ b/conf/base.config
@@ -106,7 +106,7 @@ process {
     time = { check_max (8.h * task.attempt, 'time' ) }
   }
   withName: busco {
-    container = 'nfcore/magbusco:dev'
+    container = 'nfcore/magbusco:1.1.1'
     profiles {
       conda {
         conda = "$baseDir/containers/busco/environment.yml"
@@ -114,7 +114,7 @@ process {
     }
   }
   withName: busco_plot {
-    container = 'nfcore/magbusco:dev'
+    container = 'nfcore/magbusco:1.1.1'
     profiles {
       conda {
         conda = "$baseDir/containers/busco/environment.yml"
@@ -122,7 +122,7 @@ process {
     }
   }
   withName: get_busco_version {
-    container = 'nfcore/magbusco:dev'
+    container = 'nfcore/magbusco:1.1.1'
     profiles {
       conda {
         conda = "$baseDir/containers/busco/environment.yml"
diff --git a/containers/busco/Dockerfile b/containers/busco/Dockerfile
index 6ae5f62d..99f42299 100644
--- a/containers/busco/Dockerfile
+++ b/containers/busco/Dockerfile
@@ -11,10 +11,10 @@ RUN apt-get update
 RUN apt-get install -y libxt6
 
 # Add conda installation dir to PATH (instead of doing 'conda activate')
-ENV PATH /opt/conda/envs/nf-core-mag-busco-1.2.0dev/bin:$PATH
+ENV PATH /opt/conda/envs/nf-core-mag-busco-1.1.1/bin:$PATH
 
 # Dump the details of the installed packages to a file for posterity
-RUN conda env export --name nf-core-mag-busco-1.2.0dev > nf-core-mag-busco-1.2.0dev.yml
+RUN conda env export --name nf-core-mag-busco-1.1.1 > nf-core-mag-busco-1.1.1.yml
 
 # Instruct R processes to use these empty files instead of clashing with a local version
 RUN touch .Rprofile
diff --git a/containers/busco/environment.yml b/containers/busco/environment.yml
index 56a27e68..c6ff4c0d 100644
--- a/containers/busco/environment.yml
+++ b/containers/busco/environment.yml
@@ -1,6 +1,6 @@
 # You can use this file to create a conda environment for this pipeline:
 #   conda env create -f environment.yml
-name: nf-core-mag-busco-1.2.0dev
+name: nf-core-mag-busco-1.1.1
 channels:
   - conda-forge
   - bioconda
diff --git a/environment.yml b/environment.yml
index bddeffa5..2f86ff2e 100644
--- a/environment.yml
+++ b/environment.yml
@@ -1,6 +1,6 @@
 # You can use this file to create a conda environment for this pipeline:
 #   conda env create -f environment.yml
-name: nf-core-mag-1.2.0dev
+name: nf-core-mag-1.1.1
 channels:
   - conda-forge
   - bioconda
diff --git a/nextflow.config b/nextflow.config
index 1fb65ed8..77164102 100644
--- a/nextflow.config
+++ b/nextflow.config
@@ -94,7 +94,7 @@ params {
 
 // Container slug. Stable releases should specify release tag!
 // Developmental code should specify :dev
-process.container = 'nfcore/mag:dev'
+process.container = 'nfcore/mag:1.1.1'
 
 // Load base.config by default for all pipelines
 includeConfig 'conf/base.config'
@@ -175,7 +175,7 @@ manifest {
   description = 'Assembly, binning and annotation of metagenomes'
   mainScript = 'main.nf'
   nextflowVersion = '>=19.10.0'
-  version = '1.2.0dev'
+  version = '1.1.1'
 }
 
 // Function to ensure that resource requirements don't go beyond