diff --git a/.circleci/config.yml b/.circleci/config.yml
index 9fb8ab8..a9810bc 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -29,11 +29,10 @@ install_python3: &install_python3
 install_singularity: &install_singularity
   name: Install Singularity (container)
   command: |
-    sudo apt-get install -y alien
-    sudo wget https://kojipkgs.fedoraproject.org//packages/singularity/3.8.5/2.el8/x86_64/singularity-3.8.5-2.el8.x86_64.rpm
-    sudo alien -d singularity-3.8.5-2.el8.x86_64.rpm
-    sudo apt-get install -y ./singularity_3.8.5-3_amd64.deb
-    sudo apt-get install -y squashfs-tools
+    sudo apt-get install -y alien squashfs-tools libseccomp-dev
+    sudo wget https://github.com/sylabs/singularity/releases/download/v3.11.3/singularity-ce-3.11.3-1.el8.x86_64.rpm
+    sudo alien -d singularity-ce-3.11.3-1.el8.x86_64.rpm
+    sudo apt-get install -y ./singularity-ce_3.11.3-2_amd64.deb
     singularity --version
 
 
diff --git a/caper/__init__.py b/caper/__init__.py
index 7cf5ffb..c323198 100644
--- a/caper/__init__.py
+++ b/caper/__init__.py
@@ -2,4 +2,4 @@
 from .caper_runner import CaperRunner
 
 __all__ = ['CaperClient', 'CaperClientSubmit', 'CaperRunner']
-__version__ = '2.3.0'
+__version__ = '2.3.1'
diff --git a/setup.py b/setup.py
index fb30471..d17bc84 100644
--- a/setup.py
+++ b/setup.py
@@ -61,7 +61,7 @@ def find_meta(meta):
         'pyhocon>=0.3.53',
         'requests>=2.20',
         'pyopenssl',
-        'autouri>=0.4.1',
+        'autouri>=0.4.4',
         'miniwdl>=0.7.0',
         'humanfriendly',
         'numpy>=1.8.2',