diff --git a/Pipfile b/Pipfile
index 652fbba..4f3a5d3 100644
--- a/Pipfile
+++ b/Pipfile
@@ -14,6 +14,7 @@ nbconvert = "~=5.6.1"
 coconut = "*"
 pygments = "*"
 ruamel-yaml = "*"
+arrow = "*"
 
 [dev-packages]
 aiohttp = "*"
diff --git a/Pipfile.lock b/Pipfile.lock
index 33beac8..1005d12 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "e1a4f3850f44220cfbca93a8daea410277e5fa709b4fdb053fd92df615f6b258"
+            "sha256": "c334e4e5876ca317665ba2ca58a9dcb536b1cce0ae281654e20f9356551673cc"
         },
         "pipfile-spec": 6,
         "requires": {},
@@ -34,6 +34,13 @@
             ],
             "version": "==20.1.0"
         },
+        "arrow": {
+            "hashes": [
+                "sha256:e098abbd9af3665aea81bdd6c869e93af4feb078e98468dd351c383af187aac5",
+                "sha256:ff08d10cda1d36c68657d6ad20d74fbea493d980f8b2d45344e00d6ed2bf6ed4"
+            ],
+            "version": "==0.17.0"
+        },
         "attrs": {
             "hashes": [
                 "sha256:26b54ddbbb9ee1d34d5d3668dd37d6cf74990ab23c828c2888dccdceee395594",
diff --git a/pages/talks.md b/pages/talks.md
index 33b885e..e988622 100644
--- a/pages/talks.md
+++ b/pages/talks.md
@@ -9,7 +9,7 @@ data: data/talks.yaml
 Here is a selection of talks that I've given.
 
 {{% template %}}
-<%! import datetime %>
+<%! import arrow %>
 <table>
   <thead>
     <tr>
@@ -22,7 +22,8 @@ Here is a selection of talks that I've given.
     <tr>
       <td>
         % if 'date' in talk:
-          ${talk['date'].strftime('%a')}
+          <% date = arrow.get(talk['date']) %>
+          ${date.format('ddd d MMM YYYY')}
         % endif
       </td>
       <td>
diff --git a/requirements.txt b/requirements.txt
index b1af2e5..2ce3a9b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,71 +1,73 @@
-attrs==19.3.0
-Babel==2.8.0
-backcall==0.1.0
-bleach==3.1.0
+-i https://pypi.python.org/simple
+argon2-cffi==20.1.0
+arrow==0.17.0
+attrs==20.2.0; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
+babel==2.8.0; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
+backcall==0.2.0
+bleach==3.2.1; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
 blinker==1.4
-certifi==2019.11.28
+certifi==2020.6.20
+cffi==1.14.3
 chardet==3.0.4
-cloudpickle==1.2.2
+cloudpickle==1.6.0; python_version >= '3.5'
 coconut==1.4.3
-cPyparsing==2.4.5.0.1.1
-decorator==4.4.1
-defusedxml==0.6.0
-docutils==0.16
-doit==0.32.0
-entrypoints==0.3
-idna==2.8
-importlib-metadata==1.4.0
-ipykernel==5.1.3
-ipython==7.11.1
+cpyparsing==2.4.5.0.1.1; platform_python_implementation == 'CPython'
+decorator==4.4.2
+defusedxml==0.6.0; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
+docutils==0.16; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
+doit==0.33.1; python_version >= '3.5'
+entrypoints==0.3; python_version >= '2.7'
+idna==2.10; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
+importlib-metadata==2.0.0; python_version < '3.8'
+ipykernel==5.3.4; python_version >= '3.5'
 ipython-genutils==0.2.0
-jedi==0.15.2
-Jinja2==2.10.3
+ipython==7.18.1; python_version >= '3.7'
+jedi==0.17.2; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
+jinja2==2.11.2
 jsonschema==3.2.0
-jupyter-client==5.3.4
-jupyter-core==4.6.1
-Logbook==1.5.3
-lxml==4.4.2
-Mako==1.1.0
-Markdown==3.1.1
-MarkupSafe==1.1.1
+jupyter-client==6.1.7; python_version >= '3.5'
+jupyter-core==4.6.3; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
+lxml==4.6.1; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
+mako==1.1.3; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
+markdown==3.1.1
+markupsafe==1.1.1; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
 mistune==0.8.4
-more-itertools==8.1.0
-natsort==7.0.0
+natsort==7.0.1; python_version >= '3.4'
 nbconvert==5.6.1
-nbformat==5.0.3
-Nikola==8.0.3
-notebook==6.0.2
+nbformat==5.0.8; python_version >= '3.5'
+nikola==8.1.1
+notebook==6.1.4
+packaging==20.4; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
 pandocfilters==1.4.2
-parso==0.5.2
-pexpect==4.7.0
+parso==0.7.1; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
+pexpect==4.8.0; sys_platform != 'win32'
 pickleshare==0.7.5
-piexif==1.1.3
-Pillow==7.0.0
-prometheus-client==0.7.1
-prompt-toolkit==3.0.2
-ptyprocess==0.6.0
-Pygments==2.5.2
-pyinotify==0.9.6
-pyrsistent==0.15.7
-PyRSS2Gen==1.1
-python-dateutil==2.8.1
-python-magic==0.4.15
-pytz==2019.3
-pyzmq==18.1.1
-requests==2.22.0
-ruamel.yaml==0.16.5
-ruamel.yaml.clib==0.2.0
-s3cmd==2.0.2
-Send2Trash==1.5.0
-six==1.14.0
-terminado==0.8.3
+piexif==1.1.3; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
+pillow==8.0.0; python_version >= '3.6'
+prometheus-client==0.8.0
+prompt-toolkit==3.0.8; python_version >= '3'
+ptyprocess==0.6.0; os_name != 'nt'
+pycparser==2.20; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
+pygments==2.7.1
+pyinotify==0.9.6; sys_platform == 'linux'
+pyparsing==2.4.7; python_version >= '2.6' and python_version not in '3.0, 3.1, 3.2, 3.3'
+pyrsistent==0.17.3; python_version >= '3.5'
+pyrss2gen==1.1
+python-dateutil==2.8.1; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
+pytz==2020.1
+pyzmq==19.0.2; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
+requests==2.24.0; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
+ruamel-yaml==0.16.12
+ruamel.yaml.clib==0.2.2; python_version < '3.9' and platform_python_implementation == 'CPython'
+send2trash==1.5.0
+six==1.15.0; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
+terminado==0.9.1; python_version >= '3.6'
 testpath==0.4.4
-tornado==6.0.3
-traitlets==4.3.3
-Unidecode==1.1.1
-urllib3==1.25.7
-wcwidth==0.1.8
+tornado==6.0.4; python_version >= '3.5'
+traitlets==5.0.5; python_version >= '3.7'
+unidecode==1.1.1
+urllib3==1.25.11; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4' and python_version < '4'
+wcwidth==0.2.5
 webencodings==0.5.1
-ws4py==0.5.1
-Yapsy==1.12.2
-zipp==1.0.0
+yapsy==1.12.2
+zipp==3.3.1; python_version >= '3.6'