diff --git a/docs/_config.yml b/docs/_config.yml
index 2ae92cadb6a..0e944baeacf 100644
--- a/docs/_config.yml
+++ b/docs/_config.yml
@@ -9,16 +9,16 @@ ace:
   version:
     major: 3
     minor: 12
-    patch: 3
-    build: 36
+    patch: 4
+    build: 39
 
 acex:
   githubUrl: https://github.com/acemod/ACEX
   version:
     major: 3
-    minor: 3
-    patch: 1
-    build: 8
+    minor: 4
+    patch: 0
+    build: 10
 
 
 markdown: kramdown
diff --git a/docs/_config_dev.yml b/docs/_config_dev.yml
index 09dddceed81..28ce7d695ab 100644
--- a/docs/_config_dev.yml
+++ b/docs/_config_dev.yml
@@ -9,16 +9,16 @@ ace:
   version:
     major: 3
     minor: 12
-    patch: 3
-    build: 36
+    patch: 4
+    build: 39
 
 acex:
   githubUrl: https://github.com/acemod/ACEX
   version:
     major: 3
-    minor: 3
-    patch: 1
-    build: 8
+    minor: 4
+    patch: 0
+    build: 10
 
 
 markdown: kramdown