diff --git a/CHANGELOG.md b/CHANGELOG.md
index d96ef9d3267f4d68edd4aa85f034610ec352d156..f3d05cbc498f30af530586a865849271efee2f0a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,14 @@ Changes in Release 3.2.0
    * Turn `submit-af2` into Python script
 
 
+Changes in Release 3.1.1
+=================================================================================
+
+* `run_af2` Python package:
+  * Adapt to new AF2 versioning scheme
+  * Fallback for picking up the Singularity image automatically
+
+
 Changes in Release 3.1.0
 =================================================================================
 
diff --git a/run_af2/doc/html/.buildinfo b/run_af2/doc/html/.buildinfo
index d90e894336a82d736cf95677840a8dfb4e27d043..52c6e139f374e1edb6b39fe0b7d9d01901e48613 100644
--- a/run_af2/doc/html/.buildinfo
+++ b/run_af2/doc/html/.buildinfo
@@ -1,4 +1,4 @@
 # Sphinx build info version 1
 # This file hashes the configuration used when building these files. When it is not found, a full rebuild will be done.
-config: 80029e49350607596e13800ac8a707b6
+config: c4d4f094057515b594fb8499643853e2
 tags: 645f666f9bcd5a90fca523b33c5a78b7
diff --git a/run_af2/doc/html/.doctrees/environment.pickle b/run_af2/doc/html/.doctrees/environment.pickle
index 9a080a0a8ae85545e2c2e9f46ecc2933f59ff133..021a85ddd1bb193c423f96f619400125cfc73a91 100644
Binary files a/run_af2/doc/html/.doctrees/environment.pickle and b/run_af2/doc/html/.doctrees/environment.pickle differ
diff --git a/run_af2/doc/html/.doctrees/index.doctree b/run_af2/doc/html/.doctrees/index.doctree
index a6bc3497e04868778f748d8aa0159143e2fcbc00..db1669a03d038bd70f5152e637a957b06281873b 100644
Binary files a/run_af2/doc/html/.doctrees/index.doctree and b/run_af2/doc/html/.doctrees/index.doctree differ
diff --git a/run_af2/doc/html/_shared.html b/run_af2/doc/html/_shared.html
index 4e007cb0ced66d859fbf459de6063a4b4e0370b6..53738c5cd832cfa53b1e6980fc15b2cc911b7288 100644
--- a/run_af2/doc/html/_shared.html
+++ b/run_af2/doc/html/_shared.html
@@ -6,7 +6,7 @@
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="generator" content="Docutils 0.17.1: http://docutils.sourceforge.net/" />
 
-    <title>_shared &#8212; af2@scicore/run_af2 3.0.1.dev0+g6a14f8a.d20220324 documentation</title>
+    <title>_shared &#8212; af2@scicore/run_af2 3.1.1.dev0+ge9ef748.d20220330 documentation</title>
     <link rel="stylesheet" type="text/css" href="_static/pygments.css" />
     <link rel="stylesheet" type="text/css" href="_static/sphinxdoc.css" />
     <script data-url_root="./" id="documentation_options" src="_static/documentation_options.js"></script>
@@ -33,7 +33,7 @@
         <li class="right" >
           <a href="index.html" title="Welcome to af2@scicore/run_af2’s documentation!"
              accesskey="P">previous</a> |</li>
-        <li class="nav-item nav-item-0"><a href="index.html">af2@scicore/run_af2 3.0.1.dev0+g6a14f8a.d20220324 documentation</a> &#187;</li>
+        <li class="nav-item nav-item-0"><a href="index.html">af2@scicore/run_af2 3.1.1.dev0+ge9ef748.d20220330 documentation</a> &#187;</li>
         <li class="nav-item nav-item-this"><a href="">_shared</a></li> 
       </ul>
     </div>  
@@ -129,7 +129,7 @@ and run tests on input with the <a class="reference external" href="https://docs
         <li class="right" >
           <a href="index.html" title="Welcome to af2@scicore/run_af2’s documentation!"
              >previous</a> |</li>
-        <li class="nav-item nav-item-0"><a href="index.html">af2@scicore/run_af2 3.0.1.dev0+g6a14f8a.d20220324 documentation</a> &#187;</li>
+        <li class="nav-item nav-item-0"><a href="index.html">af2@scicore/run_af2 3.1.1.dev0+ge9ef748.d20220330 documentation</a> &#187;</li>
         <li class="nav-item nav-item-this"><a href="">_shared</a></li> 
       </ul>
     </div>
diff --git a/run_af2/doc/html/_static/documentation_options.js b/run_af2/doc/html/_static/documentation_options.js
index 4986e30102d56070900525a86274d680736ca80f..6b5537d19bd3d7771e38ebeea698d0684219c1df 100644
--- a/run_af2/doc/html/_static/documentation_options.js
+++ b/run_af2/doc/html/_static/documentation_options.js
@@ -1,6 +1,6 @@
 var DOCUMENTATION_OPTIONS = {
     URL_ROOT: document.getElementById("documentation_options").getAttribute('data-url_root'),
-    VERSION: '3.0.1.dev0+g6a14f8a.d20220324',
+    VERSION: '3.1.1.dev0+ge9ef748.d20220330',
     LANGUAGE: 'None',
     COLLAPSE_INDEX: false,
     BUILDER: 'html',
diff --git a/run_af2/doc/html/genindex.html b/run_af2/doc/html/genindex.html
index b83dc32a963f0efb2bff4369350aad91dd96fcf7..f6bd01e9f758ba44216b72d90ab2de38dba35b06 100644
--- a/run_af2/doc/html/genindex.html
+++ b/run_af2/doc/html/genindex.html
@@ -5,7 +5,7 @@
   <head>
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Index &#8212; af2@scicore/run_af2 3.0.1.dev0+g6a14f8a.d20220324 documentation</title>
+    <title>Index &#8212; af2@scicore/run_af2 3.1.1.dev0+ge9ef748.d20220330 documentation</title>
     <link rel="stylesheet" type="text/css" href="_static/pygments.css" />
     <link rel="stylesheet" type="text/css" href="_static/sphinxdoc.css" />
     <script data-url_root="./" id="documentation_options" src="_static/documentation_options.js"></script>
@@ -24,7 +24,7 @@
         <li class="right" >
           <a href="py-modindex.html" title="Python Module Index"
              >modules</a> |</li>
-        <li class="nav-item nav-item-0"><a href="index.html">af2@scicore/run_af2 3.0.1.dev0+g6a14f8a.d20220324 documentation</a> &#187;</li>
+        <li class="nav-item nav-item-0"><a href="index.html">af2@scicore/run_af2 3.1.1.dev0+ge9ef748.d20220330 documentation</a> &#187;</li>
         <li class="nav-item nav-item-this"><a href="">Index</a></li> 
       </ul>
     </div>  
@@ -132,7 +132,7 @@
         <li class="right" >
           <a href="py-modindex.html" title="Python Module Index"
              >modules</a> |</li>
-        <li class="nav-item nav-item-0"><a href="index.html">af2@scicore/run_af2 3.0.1.dev0+g6a14f8a.d20220324 documentation</a> &#187;</li>
+        <li class="nav-item nav-item-0"><a href="index.html">af2@scicore/run_af2 3.1.1.dev0+ge9ef748.d20220330 documentation</a> &#187;</li>
         <li class="nav-item nav-item-this"><a href="">Index</a></li> 
       </ul>
     </div>
diff --git a/run_af2/doc/html/index.html b/run_af2/doc/html/index.html
index e8e497818f0b79a02dd3064beaf2c885396e102e..42e84f8a8a811888e06bfe2c5b6a6d5ac48a6923 100644
--- a/run_af2/doc/html/index.html
+++ b/run_af2/doc/html/index.html
@@ -6,7 +6,7 @@
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="generator" content="Docutils 0.17.1: http://docutils.sourceforge.net/" />
 
-    <title>Welcome to af2@scicore/run_af2’s documentation! &#8212; af2@scicore/run_af2 3.0.1.dev0+g6a14f8a.d20220324 documentation</title>
+    <title>Welcome to af2@scicore/run_af2’s documentation! &#8212; af2@scicore/run_af2 3.1.1.dev0+ge9ef748.d20220330 documentation</title>
     <link rel="stylesheet" type="text/css" href="_static/pygments.css" />
     <link rel="stylesheet" type="text/css" href="_static/sphinxdoc.css" />
     <script data-url_root="./" id="documentation_options" src="_static/documentation_options.js"></script>
@@ -29,7 +29,7 @@
         <li class="right" >
           <a href="_shared.html" title="_shared"
              accesskey="N">next</a> |</li>
-        <li class="nav-item nav-item-0"><a href="#">af2@scicore/run_af2 3.0.1.dev0+g6a14f8a.d20220324 documentation</a> &#187;</li>
+        <li class="nav-item nav-item-0"><a href="#">af2@scicore/run_af2 3.1.1.dev0+ge9ef748.d20220330 documentation</a> &#187;</li>
         <li class="nav-item nav-item-this"><a href="">Welcome to af2&#64;scicore/run_af2’s documentation!</a></li> 
       </ul>
     </div>  
@@ -41,7 +41,7 @@
             
   <section id="welcome-to-af2-scicore-run-af2-s-documentation">
 <h1>Welcome to af2&#64;scicore/run_af2’s documentation!<a class="headerlink" href="#welcome-to-af2-scicore-run-af2-s-documentation" title="Permalink to this headline">¶</a></h1>
-<p>You are reading the documentation for version 3.0 (release 3.0.1.dev0+g6a14f8a.d20220324)
+<p>You are reading the documentation for version 3.1 (release 3.1.1.dev0+ge9ef748.d20220330)
 of <strong>run_af2</strong>.</p>
 <p><strong>run_af2</strong> is a Python package to run the <a class="reference external" href="https://github.com/deepmind/alphafold">AlphaFold 2 (AF2) pipeline</a> on the sciCORE cluster.</p>
 <p>The package comes with two major parts: userland commands to just execute the
@@ -114,7 +114,7 @@ Python modules is here:</p>
         <li class="right" >
           <a href="_shared.html" title="_shared"
              >next</a> |</li>
-        <li class="nav-item nav-item-0"><a href="#">af2@scicore/run_af2 3.0.1.dev0+g6a14f8a.d20220324 documentation</a> &#187;</li>
+        <li class="nav-item nav-item-0"><a href="#">af2@scicore/run_af2 3.1.1.dev0+ge9ef748.d20220330 documentation</a> &#187;</li>
         <li class="nav-item nav-item-this"><a href="">Welcome to af2&#64;scicore/run_af2’s documentation!</a></li> 
       </ul>
     </div>
diff --git a/run_af2/doc/html/objects.inv b/run_af2/doc/html/objects.inv
index da87deccadcf6ae32fb4bb7723c80d095b84328d..768871765c0be7c5efe508d3e1cdc9320860418e 100644
Binary files a/run_af2/doc/html/objects.inv and b/run_af2/doc/html/objects.inv differ
diff --git a/run_af2/doc/html/py-modindex.html b/run_af2/doc/html/py-modindex.html
index a82beecea6cc82ef36880dbc0d3c73e7b4f0211e..599f7a768b12561109399afe832d04725d6a2e16 100644
--- a/run_af2/doc/html/py-modindex.html
+++ b/run_af2/doc/html/py-modindex.html
@@ -5,7 +5,7 @@
   <head>
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Python Module Index &#8212; af2@scicore/run_af2 3.0.1.dev0+g6a14f8a.d20220324 documentation</title>
+    <title>Python Module Index &#8212; af2@scicore/run_af2 3.1.1.dev0+ge9ef748.d20220330 documentation</title>
     <link rel="stylesheet" type="text/css" href="_static/pygments.css" />
     <link rel="stylesheet" type="text/css" href="_static/sphinxdoc.css" />
     <script data-url_root="./" id="documentation_options" src="_static/documentation_options.js"></script>
@@ -27,7 +27,7 @@
         <li class="right" >
           <a href="#" title="Python Module Index"
              >modules</a> |</li>
-        <li class="nav-item nav-item-0"><a href="index.html">af2@scicore/run_af2 3.0.1.dev0+g6a14f8a.d20220324 documentation</a> &#187;</li>
+        <li class="nav-item nav-item-0"><a href="index.html">af2@scicore/run_af2 3.1.1.dev0+ge9ef748.d20220330 documentation</a> &#187;</li>
         <li class="nav-item nav-item-this"><a href="">Python Module Index</a></li> 
       </ul>
     </div>  
@@ -96,7 +96,7 @@
         <li class="right" >
           <a href="#" title="Python Module Index"
              >modules</a> |</li>
-        <li class="nav-item nav-item-0"><a href="index.html">af2@scicore/run_af2 3.0.1.dev0+g6a14f8a.d20220324 documentation</a> &#187;</li>
+        <li class="nav-item nav-item-0"><a href="index.html">af2@scicore/run_af2 3.1.1.dev0+ge9ef748.d20220330 documentation</a> &#187;</li>
         <li class="nav-item nav-item-this"><a href="">Python Module Index</a></li> 
       </ul>
     </div>
diff --git a/run_af2/doc/html/run_singularity.html b/run_af2/doc/html/run_singularity.html
index 520f47c885c303596a85f0c36db90d266e172df5..4377c70cabfe68caf6492843b5a3093768f59378 100644
--- a/run_af2/doc/html/run_singularity.html
+++ b/run_af2/doc/html/run_singularity.html
@@ -6,7 +6,7 @@
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="generator" content="Docutils 0.17.1: http://docutils.sourceforge.net/" />
 
-    <title>run_singularity &#8212; af2@scicore/run_af2 3.0.1.dev0+g6a14f8a.d20220324 documentation</title>
+    <title>run_singularity &#8212; af2@scicore/run_af2 3.1.1.dev0+ge9ef748.d20220330 documentation</title>
     <link rel="stylesheet" type="text/css" href="_static/pygments.css" />
     <link rel="stylesheet" type="text/css" href="_static/sphinxdoc.css" />
     <script data-url_root="./" id="documentation_options" src="_static/documentation_options.js"></script>
@@ -29,7 +29,7 @@
         <li class="right" >
           <a href="_shared.html" title="_shared"
              accesskey="P">previous</a> |</li>
-        <li class="nav-item nav-item-0"><a href="index.html">af2@scicore/run_af2 3.0.1.dev0+g6a14f8a.d20220324 documentation</a> &#187;</li>
+        <li class="nav-item nav-item-0"><a href="index.html">af2@scicore/run_af2 3.1.1.dev0+ge9ef748.d20220330 documentation</a> &#187;</li>
         <li class="nav-item nav-item-this"><a href="">run_singularity</a></li> 
       </ul>
     </div>  
@@ -191,7 +191,7 @@ in AF2.</p></li>
         <li class="right" >
           <a href="_shared.html" title="_shared"
              >previous</a> |</li>
-        <li class="nav-item nav-item-0"><a href="index.html">af2@scicore/run_af2 3.0.1.dev0+g6a14f8a.d20220324 documentation</a> &#187;</li>
+        <li class="nav-item nav-item-0"><a href="index.html">af2@scicore/run_af2 3.1.1.dev0+ge9ef748.d20220330 documentation</a> &#187;</li>
         <li class="nav-item nav-item-this"><a href="">run_singularity</a></li> 
       </ul>
     </div>
diff --git a/run_af2/doc/html/search.html b/run_af2/doc/html/search.html
index 09d1f7d74f93dbb1549ac69f4e847b6f43c08160..9314d37a397c9c608813f5d3b56f471006ddc7fb 100644
--- a/run_af2/doc/html/search.html
+++ b/run_af2/doc/html/search.html
@@ -5,7 +5,7 @@
   <head>
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Search &#8212; af2@scicore/run_af2 3.0.1.dev0+g6a14f8a.d20220324 documentation</title>
+    <title>Search &#8212; af2@scicore/run_af2 3.1.1.dev0+ge9ef748.d20220330 documentation</title>
     <link rel="stylesheet" type="text/css" href="_static/pygments.css" />
     <link rel="stylesheet" type="text/css" href="_static/sphinxdoc.css" />
     
@@ -30,7 +30,7 @@
         <li class="right" >
           <a href="py-modindex.html" title="Python Module Index"
              >modules</a> |</li>
-        <li class="nav-item nav-item-0"><a href="index.html">af2@scicore/run_af2 3.0.1.dev0+g6a14f8a.d20220324 documentation</a> &#187;</li>
+        <li class="nav-item nav-item-0"><a href="index.html">af2@scicore/run_af2 3.1.1.dev0+ge9ef748.d20220330 documentation</a> &#187;</li>
         <li class="nav-item nav-item-this"><a href="">Search</a></li> 
       </ul>
     </div>  
@@ -89,7 +89,7 @@
         <li class="right" >
           <a href="py-modindex.html" title="Python Module Index"
              >modules</a> |</li>
-        <li class="nav-item nav-item-0"><a href="index.html">af2@scicore/run_af2 3.0.1.dev0+g6a14f8a.d20220324 documentation</a> &#187;</li>
+        <li class="nav-item nav-item-0"><a href="index.html">af2@scicore/run_af2 3.1.1.dev0+ge9ef748.d20220330 documentation</a> &#187;</li>
         <li class="nav-item nav-item-this"><a href="">Search</a></li> 
       </ul>
     </div>
diff --git a/run_af2/doc/html/searchindex.js b/run_af2/doc/html/searchindex.js
index 9a0002e92d90c2112e545000db10c31fa6282fec..1cbbdaa1331dec46e59915c685a4b3307c814ff6 100644
--- a/run_af2/doc/html/searchindex.js
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diff --git a/run_af2/src/run_af2/run_singularity.py b/run_af2/src/run_af2/run_singularity.py
index 2c962485dedf4f89f96663870e1eac773f6a2d95..bd6e0fe86dfca14d6c1cbbf52bf05cbefd492640 100644
--- a/run_af2/src/run_af2/run_singularity.py
+++ b/run_af2/src/run_af2/run_singularity.py
@@ -177,7 +177,9 @@ def _assemble_singularity_call(  # pylint: disable=too-many-arguments
 def _determine_af2_image(af2_image_dir):
     """Select an image from a given directory. File name of the images need to
     be of form alphafold-<YYYY-MM-DD>.sif. The path to the latest image will be
-    returned, determined by the '<YYYY-MM-DD>' component of the file name."""
+    returned, determined by the '<YYYY-MM-DD>' component of the file name. If
+    the file name is of different form, an arbitrary file ending with '.sif'
+    will be used."""
     lst_mtch = "0000-00-00"
     af2_path = ""
     af2_files = os.listdir(af2_image_dir)
@@ -192,6 +194,8 @@ def _determine_af2_image(af2_image_dir):
             if mtch.group(1) > lst_mtch:
                 af2_path = af2_file
                 lst_mtch = mtch.group(1)
+        elif af2_file.endswith(".sif"):
+            af2_path = af2_file
     af2_path = os.path.join(af2_image_dir, af2_path)
 
     return af2_path