diff --git a/docs/varnish/vcl/varnish5.vcl b/docs/varnish/vcl/varnish5.vcl
index 871fe37..22fb8e2 100644
--- a/docs/varnish/vcl/varnish5.vcl
+++ b/docs/varnish/vcl/varnish5.vcl
@@ -52,7 +52,7 @@ sub vcl_recv {
         set req.http.cookie = ";" + req.http.cookie;
         set req.http.cookie = regsuball(req.http.cookie, "; +", ";");
         set req.http.cookie = regsuball(req.http.cookie, ";(IBX_SESSION_ID[^=]*)=", "; \1=");
-        set req.http.cookie = regsuball(req.http.cookie, ";(ibexa-[^=]*)=", "; \1=");
+        set req.http.cookie = regsuball(req.http.cookie, ";(ibexa[-_][^=]*)=", "; \1=");
         set req.http.cookie = regsuball(req.http.cookie, ";[^ ][^;]*", "");
         set req.http.cookie = regsuball(req.http.cookie, "^[; ]+|[; ]+$", "");
 
diff --git a/docs/varnish/vcl/varnish6.vcl b/docs/varnish/vcl/varnish6.vcl
index 3fe4e16..8dcbc5a 100644
--- a/docs/varnish/vcl/varnish6.vcl
+++ b/docs/varnish/vcl/varnish6.vcl
@@ -52,7 +52,7 @@ sub vcl_recv {
         set req.http.cookie = ";" + req.http.cookie;
         set req.http.cookie = regsuball(req.http.cookie, "; +", ";");
         set req.http.cookie = regsuball(req.http.cookie, ";(IBX_SESSION_ID[^=]*)=", "; \1=");
-        set req.http.cookie = regsuball(req.http.cookie, ";(ibexa-[^=]*)=", "; \1=");
+        set req.http.cookie = regsuball(req.http.cookie, ";(ibexa[-_][^=]*)=", "; \1=");
         set req.http.cookie = regsuball(req.http.cookie, ";[^ ][^;]*", "");
         set req.http.cookie = regsuball(req.http.cookie, "^[; ]+|[; ]+$", "");
 
diff --git a/docs/varnish/vcl/varnish7.vcl b/docs/varnish/vcl/varnish7.vcl
index a458f7f..7dedf73 100644
--- a/docs/varnish/vcl/varnish7.vcl
+++ b/docs/varnish/vcl/varnish7.vcl
@@ -50,7 +50,7 @@ sub vcl_recv {
         set req.http.cookie = ";" + req.http.cookie;
         set req.http.cookie = regsuball(req.http.cookie, "; +", ";");
         set req.http.cookie = regsuball(req.http.cookie, ";(IBX_SESSION_ID[^=]*)=", "; \1=");
-        set req.http.cookie = regsuball(req.http.cookie, ";(ibexa-[^=]*)=", "; \1=");
+        set req.http.cookie = regsuball(req.http.cookie, ";(ibexa[-_][^=]*)=", "; \1=");
         set req.http.cookie = regsuball(req.http.cookie, ";[^ ][^;]*", "");
         set req.http.cookie = regsuball(req.http.cookie, "^[; ]+|[; ]+$", "");