diff --git a/install_utils/apache2/re2o-tls.conf b/install_utils/apache2/re2o-tls.conf
index eb8f2c42..b9ae3741 100644
--- a/install_utils/apache2/re2o-tls.conf
+++ b/install_utils/apache2/re2o-tls.conf
@@ -32,4 +32,6 @@
     SSLCertificateKeyFile /etc/letsencrypt/live/LE_PATH/privkey.pem
     Include /etc/letsencrypt/options-ssl-apache.conf
 
+    AllowEncodedSlashes On
+
 </VirtualHost>
diff --git a/install_utils/apache2/re2o.conf b/install_utils/apache2/re2o.conf
index 1b4e02b3..ed2bbf4c 100644
--- a/install_utils/apache2/re2o.conf
+++ b/install_utils/apache2/re2o.conf
@@ -21,4 +21,6 @@
     WSGIDaemonProcess re2o processes=2 threads=16 maximum-requests=1000 display-name=re2o
     WSGIPassAuthorization On
 
+    AllowEncodedSlashes On
+
 </VirtualHost>