diff --git a/data/nextstrain/flu/h3n2/ha/EPI1857216/CHANGELOG.md b/data/nextstrain/flu/h3n2/ha/EPI1857216/CHANGELOG.md
index 0572a0d2..68b2fa3c 100644
--- a/data/nextstrain/flu/h3n2/ha/EPI1857216/CHANGELOG.md
+++ b/data/nextstrain/flu/h3n2/ha/EPI1857216/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-08-08T05:08:21Z
 
 Fix numbering of RBD sites it the `pathogen.json`. The relevant positions were indexed 1-based, when they should have been indexed 0-based.
 
diff --git a/data_output/index.json b/data_output/index.json
index c62e2dfb..a088c5c5 100644
--- a/data_output/index.json
+++ b/data_output/index.json
@@ -1124,7 +1124,8 @@
           },
           "versions": [
             {
-              "tag": "unreleased",
+              "updatedAt": "2024-08-08T05:08:21Z",
+              "tag": "2024-08-08--05-08-21Z",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -1164,7 +1165,8 @@
             }
           ],
           "version": {
-            "tag": "unreleased",
+            "updatedAt": "2024-08-08T05:08:21Z",
+            "tag": "2024-08-08--05-08-21Z",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
diff --git a/data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/CHANGELOG.md b/data_output/nextstrain/flu/h3n2/ha/EPI1857216/2024-08-08--05-08-21Z/CHANGELOG.md
similarity index 98%
rename from data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/CHANGELOG.md
rename to data_output/nextstrain/flu/h3n2/ha/EPI1857216/2024-08-08--05-08-21Z/CHANGELOG.md
index 0572a0d2..68b2fa3c 100644
--- a/data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/flu/h3n2/ha/EPI1857216/2024-08-08--05-08-21Z/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-08-08T05:08:21Z
 
 Fix numbering of RBD sites it the `pathogen.json`. The relevant positions were indexed 1-based, when they should have been indexed 0-based.
 
diff --git a/data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/README.md b/data_output/nextstrain/flu/h3n2/ha/EPI1857216/2024-08-08--05-08-21Z/README.md
similarity index 100%
rename from data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/README.md
rename to data_output/nextstrain/flu/h3n2/ha/EPI1857216/2024-08-08--05-08-21Z/README.md
diff --git a/data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/dataset.zip b/data_output/nextstrain/flu/h3n2/ha/EPI1857216/2024-08-08--05-08-21Z/dataset.zip
similarity index 99%
rename from data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/dataset.zip
rename to data_output/nextstrain/flu/h3n2/ha/EPI1857216/2024-08-08--05-08-21Z/dataset.zip
index b0afafc2..569797b6 100644
Binary files a/data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/dataset.zip and b/data_output/nextstrain/flu/h3n2/ha/EPI1857216/2024-08-08--05-08-21Z/dataset.zip differ
diff --git a/data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/genome_annotation.gff3 b/data_output/nextstrain/flu/h3n2/ha/EPI1857216/2024-08-08--05-08-21Z/genome_annotation.gff3
similarity index 100%
rename from data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/genome_annotation.gff3
rename to data_output/nextstrain/flu/h3n2/ha/EPI1857216/2024-08-08--05-08-21Z/genome_annotation.gff3
diff --git a/data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/pathogen.json b/data_output/nextstrain/flu/h3n2/ha/EPI1857216/2024-08-08--05-08-21Z/pathogen.json
similarity index 98%
rename from data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/pathogen.json
rename to data_output/nextstrain/flu/h3n2/ha/EPI1857216/2024-08-08--05-08-21Z/pathogen.json
index 6a442760..b86d596b 100644
--- a/data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/pathogen.json
+++ b/data_output/nextstrain/flu/h3n2/ha/EPI1857216/2024-08-08--05-08-21Z/pathogen.json
@@ -165,7 +165,8 @@
     "reference name": "A/Darwin/6/2021"
   },
   "version": {
-    "tag": "unreleased",
+    "updatedAt": "2024-08-08T05:08:21Z",
+    "tag": "2024-08-08--05-08-21Z",
     "compatibility": {
       "cli": "3.0.0-alpha.0",
       "web": "3.0.0-alpha.0"
diff --git a/data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/reference.fasta b/data_output/nextstrain/flu/h3n2/ha/EPI1857216/2024-08-08--05-08-21Z/reference.fasta
similarity index 100%
rename from data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/reference.fasta
rename to data_output/nextstrain/flu/h3n2/ha/EPI1857216/2024-08-08--05-08-21Z/reference.fasta
diff --git a/data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/sequences.fasta b/data_output/nextstrain/flu/h3n2/ha/EPI1857216/2024-08-08--05-08-21Z/sequences.fasta
similarity index 100%
rename from data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/sequences.fasta
rename to data_output/nextstrain/flu/h3n2/ha/EPI1857216/2024-08-08--05-08-21Z/sequences.fasta
diff --git a/data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/tree.json b/data_output/nextstrain/flu/h3n2/ha/EPI1857216/2024-08-08--05-08-21Z/tree.json
similarity index 100%
rename from data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/tree.json
rename to data_output/nextstrain/flu/h3n2/ha/EPI1857216/2024-08-08--05-08-21Z/tree.json