diff --git a/data/nextstrain/mpox/clade-i/CHANGELOG.md b/data/nextstrain/mpox/clade-i/CHANGELOG.md
index eb229b03..faa9dc11 100644
--- a/data/nextstrain/mpox/clade-i/CHANGELOG.md
+++ b/data/nextstrain/mpox/clade-i/CHANGELOG.md
@@ -1,3 +1,3 @@
-## Unreleased
+## 2024-08-01T22:31:31Z
 
 Initial release of this dataset.
diff --git a/data/nextstrain/rsv/a/EPI_ISL_412866/CHANGELOG.md b/data/nextstrain/rsv/a/EPI_ISL_412866/CHANGELOG.md
index ee9bf22c..deb6140d 100644
--- a/data/nextstrain/rsv/a/EPI_ISL_412866/CHANGELOG.md
+++ b/data/nextstrain/rsv/a/EPI_ISL_412866/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-08-01T22:31:31Z
 
  - add subclades A.D.1.4-8
  - add subclades A.D.3.2-6, add representatives to A.D.3.1
diff --git a/data/nextstrain/rsv/b/EPI_ISL_1653999/CHANGELOG.md b/data/nextstrain/rsv/b/EPI_ISL_1653999/CHANGELOG.md
index 1bf245a4..8caa598b 100644
--- a/data/nextstrain/rsv/b/EPI_ISL_1653999/CHANGELOG.md
+++ b/data/nextstrain/rsv/b/EPI_ISL_1653999/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-08-01T22:31:31Z
 
  - update of reference tree with additional data. No new clades.
 
diff --git a/data_output/index.json b/data_output/index.json
index a3e6d359..1164227b 100644
--- a/data_output/index.json
+++ b/data_output/index.json
@@ -1567,7 +1567,8 @@
           },
           "versions": [
             {
-              "tag": "unreleased",
+              "updatedAt": "2024-08-01T22:31:31Z",
+              "tag": "2024-08-01--22-31-31Z",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -1591,7 +1592,8 @@
             }
           ],
           "version": {
-            "tag": "unreleased",
+            "updatedAt": "2024-08-01T22:31:31Z",
+            "tag": "2024-08-01--22-31-31Z",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -1655,7 +1657,8 @@
           },
           "versions": [
             {
-              "tag": "unreleased",
+              "updatedAt": "2024-08-01T22:31:31Z",
+              "tag": "2024-08-01--22-31-31Z",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -1679,7 +1682,8 @@
             }
           ],
           "version": {
-            "tag": "unreleased",
+            "updatedAt": "2024-08-01T22:31:31Z",
+            "tag": "2024-08-01--22-31-31Z",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -1778,7 +1782,8 @@
           },
           "versions": [
             {
-              "tag": "unreleased",
+              "updatedAt": "2024-08-01T22:31:31Z",
+              "tag": "2024-08-01--22-31-31Z",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -1786,7 +1791,8 @@
             }
           ],
           "version": {
-            "tag": "unreleased",
+            "updatedAt": "2024-08-01T22:31:31Z",
+            "tag": "2024-08-01--22-31-31Z",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
diff --git a/data_output/nextstrain/mpox/clade-i/unreleased/CHANGELOG.md b/data_output/nextstrain/mpox/clade-i/2024-08-01--22-31-31Z/CHANGELOG.md
similarity index 58%
rename from data_output/nextstrain/mpox/clade-i/unreleased/CHANGELOG.md
rename to data_output/nextstrain/mpox/clade-i/2024-08-01--22-31-31Z/CHANGELOG.md
index eb229b03..faa9dc11 100644
--- a/data_output/nextstrain/mpox/clade-i/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/mpox/clade-i/2024-08-01--22-31-31Z/CHANGELOG.md
@@ -1,3 +1,3 @@
-## Unreleased
+## 2024-08-01T22:31:31Z
 
 Initial release of this dataset.
diff --git a/data_output/nextstrain/mpox/clade-i/unreleased/README.md b/data_output/nextstrain/mpox/clade-i/2024-08-01--22-31-31Z/README.md
similarity index 100%
rename from data_output/nextstrain/mpox/clade-i/unreleased/README.md
rename to data_output/nextstrain/mpox/clade-i/2024-08-01--22-31-31Z/README.md
diff --git a/data_output/nextstrain/mpox/clade-i/unreleased/dataset.zip b/data_output/nextstrain/mpox/clade-i/2024-08-01--22-31-31Z/dataset.zip
similarity index 99%
rename from data_output/nextstrain/mpox/clade-i/unreleased/dataset.zip
rename to data_output/nextstrain/mpox/clade-i/2024-08-01--22-31-31Z/dataset.zip
index dafb91e6..5118512a 100644
Binary files a/data_output/nextstrain/mpox/clade-i/unreleased/dataset.zip and b/data_output/nextstrain/mpox/clade-i/2024-08-01--22-31-31Z/dataset.zip differ
diff --git a/data_output/nextstrain/mpox/clade-i/unreleased/genome_annotation.gff3 b/data_output/nextstrain/mpox/clade-i/2024-08-01--22-31-31Z/genome_annotation.gff3
similarity index 100%
rename from data_output/nextstrain/mpox/clade-i/unreleased/genome_annotation.gff3
rename to data_output/nextstrain/mpox/clade-i/2024-08-01--22-31-31Z/genome_annotation.gff3
diff --git a/data_output/nextstrain/mpox/clade-i/unreleased/pathogen.json b/data_output/nextstrain/mpox/clade-i/2024-08-01--22-31-31Z/pathogen.json
similarity index 95%
rename from data_output/nextstrain/mpox/clade-i/unreleased/pathogen.json
rename to data_output/nextstrain/mpox/clade-i/2024-08-01--22-31-31Z/pathogen.json
index 4ef5dee8..bd1c81ad 100644
--- a/data_output/nextstrain/mpox/clade-i/unreleased/pathogen.json
+++ b/data_output/nextstrain/mpox/clade-i/2024-08-01--22-31-31Z/pathogen.json
@@ -67,7 +67,8 @@
   "schemaVersion": "3.0.0",
   "shortcuts": [],
   "version": {
-    "tag": "unreleased",
+    "updatedAt": "2024-08-01T22:31:31Z",
+    "tag": "2024-08-01--22-31-31Z",
     "compatibility": {
       "cli": "3.0.0-alpha.0",
       "web": "3.0.0-alpha.0"
diff --git a/data_output/nextstrain/mpox/clade-i/unreleased/reference.fasta b/data_output/nextstrain/mpox/clade-i/2024-08-01--22-31-31Z/reference.fasta
similarity index 100%
rename from data_output/nextstrain/mpox/clade-i/unreleased/reference.fasta
rename to data_output/nextstrain/mpox/clade-i/2024-08-01--22-31-31Z/reference.fasta
diff --git a/data_output/nextstrain/mpox/clade-i/unreleased/sequences.fasta b/data_output/nextstrain/mpox/clade-i/2024-08-01--22-31-31Z/sequences.fasta
similarity index 100%
rename from data_output/nextstrain/mpox/clade-i/unreleased/sequences.fasta
rename to data_output/nextstrain/mpox/clade-i/2024-08-01--22-31-31Z/sequences.fasta
diff --git a/data_output/nextstrain/mpox/clade-i/unreleased/tree.json b/data_output/nextstrain/mpox/clade-i/2024-08-01--22-31-31Z/tree.json
similarity index 100%
rename from data_output/nextstrain/mpox/clade-i/unreleased/tree.json
rename to data_output/nextstrain/mpox/clade-i/2024-08-01--22-31-31Z/tree.json
diff --git a/data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/CHANGELOG.md b/data_output/nextstrain/rsv/a/EPI_ISL_412866/2024-08-01--22-31-31Z/CHANGELOG.md
similarity index 93%
rename from data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/CHANGELOG.md
rename to data_output/nextstrain/rsv/a/EPI_ISL_412866/2024-08-01--22-31-31Z/CHANGELOG.md
index ee9bf22c..deb6140d 100644
--- a/data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/rsv/a/EPI_ISL_412866/2024-08-01--22-31-31Z/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-08-01T22:31:31Z
 
  - add subclades A.D.1.4-8
  - add subclades A.D.3.2-6, add representatives to A.D.3.1
diff --git a/data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/README.md b/data_output/nextstrain/rsv/a/EPI_ISL_412866/2024-08-01--22-31-31Z/README.md
similarity index 100%
rename from data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/README.md
rename to data_output/nextstrain/rsv/a/EPI_ISL_412866/2024-08-01--22-31-31Z/README.md
diff --git a/data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/dataset.zip b/data_output/nextstrain/rsv/a/EPI_ISL_412866/2024-08-01--22-31-31Z/dataset.zip
similarity index 99%
rename from data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/dataset.zip
rename to data_output/nextstrain/rsv/a/EPI_ISL_412866/2024-08-01--22-31-31Z/dataset.zip
index f6f8acb3..5a95d509 100644
Binary files a/data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/dataset.zip and b/data_output/nextstrain/rsv/a/EPI_ISL_412866/2024-08-01--22-31-31Z/dataset.zip differ
diff --git a/data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/genome_annotation.gff3 b/data_output/nextstrain/rsv/a/EPI_ISL_412866/2024-08-01--22-31-31Z/genome_annotation.gff3
similarity index 100%
rename from data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/genome_annotation.gff3
rename to data_output/nextstrain/rsv/a/EPI_ISL_412866/2024-08-01--22-31-31Z/genome_annotation.gff3
diff --git a/data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/pathogen.json b/data_output/nextstrain/rsv/a/EPI_ISL_412866/2024-08-01--22-31-31Z/pathogen.json
similarity index 96%
rename from data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/pathogen.json
rename to data_output/nextstrain/rsv/a/EPI_ISL_412866/2024-08-01--22-31-31Z/pathogen.json
index 943d4910..2012e36b 100644
--- a/data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/pathogen.json
+++ b/data_output/nextstrain/rsv/a/EPI_ISL_412866/2024-08-01--22-31-31Z/pathogen.json
@@ -100,7 +100,8 @@
     "L"
   ],
   "version": {
-    "tag": "unreleased",
+    "updatedAt": "2024-08-01T22:31:31Z",
+    "tag": "2024-08-01--22-31-31Z",
     "compatibility": {
       "cli": "3.0.0-alpha.0",
       "web": "3.0.0-alpha.0"
diff --git a/data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/reference.fasta b/data_output/nextstrain/rsv/a/EPI_ISL_412866/2024-08-01--22-31-31Z/reference.fasta
similarity index 100%
rename from data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/reference.fasta
rename to data_output/nextstrain/rsv/a/EPI_ISL_412866/2024-08-01--22-31-31Z/reference.fasta
diff --git a/data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/sequences.fasta b/data_output/nextstrain/rsv/a/EPI_ISL_412866/2024-08-01--22-31-31Z/sequences.fasta
similarity index 100%
rename from data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/sequences.fasta
rename to data_output/nextstrain/rsv/a/EPI_ISL_412866/2024-08-01--22-31-31Z/sequences.fasta
diff --git a/data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/tree.json b/data_output/nextstrain/rsv/a/EPI_ISL_412866/2024-08-01--22-31-31Z/tree.json
similarity index 100%
rename from data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/tree.json
rename to data_output/nextstrain/rsv/a/EPI_ISL_412866/2024-08-01--22-31-31Z/tree.json
diff --git a/data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/CHANGELOG.md b/data_output/nextstrain/rsv/b/EPI_ISL_1653999/2024-08-01--22-31-31Z/CHANGELOG.md
similarity index 91%
rename from data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/CHANGELOG.md
rename to data_output/nextstrain/rsv/b/EPI_ISL_1653999/2024-08-01--22-31-31Z/CHANGELOG.md
index 1bf245a4..8caa598b 100644
--- a/data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/rsv/b/EPI_ISL_1653999/2024-08-01--22-31-31Z/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-08-01T22:31:31Z
 
  - update of reference tree with additional data. No new clades.
 
diff --git a/data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/README.md b/data_output/nextstrain/rsv/b/EPI_ISL_1653999/2024-08-01--22-31-31Z/README.md
similarity index 100%
rename from data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/README.md
rename to data_output/nextstrain/rsv/b/EPI_ISL_1653999/2024-08-01--22-31-31Z/README.md
diff --git a/data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/dataset.zip b/data_output/nextstrain/rsv/b/EPI_ISL_1653999/2024-08-01--22-31-31Z/dataset.zip
similarity index 99%
rename from data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/dataset.zip
rename to data_output/nextstrain/rsv/b/EPI_ISL_1653999/2024-08-01--22-31-31Z/dataset.zip
index db33a92b..a9b8b74d 100644
Binary files a/data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/dataset.zip and b/data_output/nextstrain/rsv/b/EPI_ISL_1653999/2024-08-01--22-31-31Z/dataset.zip differ
diff --git a/data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/genome_annotation.gff3 b/data_output/nextstrain/rsv/b/EPI_ISL_1653999/2024-08-01--22-31-31Z/genome_annotation.gff3
similarity index 100%
rename from data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/genome_annotation.gff3
rename to data_output/nextstrain/rsv/b/EPI_ISL_1653999/2024-08-01--22-31-31Z/genome_annotation.gff3
diff --git a/data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/pathogen.json b/data_output/nextstrain/rsv/b/EPI_ISL_1653999/2024-08-01--22-31-31Z/pathogen.json
similarity index 96%
rename from data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/pathogen.json
rename to data_output/nextstrain/rsv/b/EPI_ISL_1653999/2024-08-01--22-31-31Z/pathogen.json
index c614aed6..e91a5f7f 100644
--- a/data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/pathogen.json
+++ b/data_output/nextstrain/rsv/b/EPI_ISL_1653999/2024-08-01--22-31-31Z/pathogen.json
@@ -100,7 +100,8 @@
     "L"
   ],
   "version": {
-    "tag": "unreleased",
+    "updatedAt": "2024-08-01T22:31:31Z",
+    "tag": "2024-08-01--22-31-31Z",
     "compatibility": {
       "cli": "3.0.0-alpha.0",
       "web": "3.0.0-alpha.0"
diff --git a/data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/reference.fasta b/data_output/nextstrain/rsv/b/EPI_ISL_1653999/2024-08-01--22-31-31Z/reference.fasta
similarity index 100%
rename from data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/reference.fasta
rename to data_output/nextstrain/rsv/b/EPI_ISL_1653999/2024-08-01--22-31-31Z/reference.fasta
diff --git a/data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/sequences.fasta b/data_output/nextstrain/rsv/b/EPI_ISL_1653999/2024-08-01--22-31-31Z/sequences.fasta
similarity index 100%
rename from data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/sequences.fasta
rename to data_output/nextstrain/rsv/b/EPI_ISL_1653999/2024-08-01--22-31-31Z/sequences.fasta
diff --git a/data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/tree.json b/data_output/nextstrain/rsv/b/EPI_ISL_1653999/2024-08-01--22-31-31Z/tree.json
similarity index 100%
rename from data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/tree.json
rename to data_output/nextstrain/rsv/b/EPI_ISL_1653999/2024-08-01--22-31-31Z/tree.json