diff --git a/V/VLBISkyModels/Compat.toml b/V/VLBISkyModels/Compat.toml
index f8caeb45e651c1c..e2c6893dd5572ae 100644
--- a/V/VLBISkyModels/Compat.toml
+++ b/V/VLBISkyModels/Compat.toml
@@ -133,9 +133,12 @@ DimensionalData = ["0.29 - 0.29.24", "0.29.26 - 0.29"]
 NFFT = "0.14"
 NonuniformFFTs = "0.9"
 
-["0.6.19 - 0"]
+["0.6.19 - 0.6.20"]
 ComradeBase = "0.9.6 - 0.9"
 
+["0.6.21 - 0"]
+ComradeBase = "0.9.8 - 0.9"
+
 ["0.6.3"]
 DimensionalData = "0.27-0.28"
 
diff --git a/V/VLBISkyModels/Versions.toml b/V/VLBISkyModels/Versions.toml
index b395494031fdec7..3e62f304f7f44e7 100644
--- a/V/VLBISkyModels/Versions.toml
+++ b/V/VLBISkyModels/Versions.toml
@@ -141,3 +141,6 @@ git-tree-sha1 = "7e772bd2137ad0ea319dbf486f84828157dbd793"
 
 ["0.6.20"]
 git-tree-sha1 = "c92437f9a969226f57a941f186339a19c9b047fe"
+
+["0.6.21"]
+git-tree-sha1 = "c49b75caa044b8b5905263526bf555dcae2fd159"
diff --git a/V/VLBISkyModels/WeakCompat.toml b/V/VLBISkyModels/WeakCompat.toml
index ba49f5838002649..c4d22fdfbc55c30 100644
--- a/V/VLBISkyModels/WeakCompat.toml
+++ b/V/VLBISkyModels/WeakCompat.toml
@@ -25,6 +25,9 @@ NonuniformFFTs = "0.8"
 ["0.6.18 - 0"]
 NonuniformFFTs = "0.9"
 
+["0.6.21 - 0"]
+Reactant = "0.2"
+
 ["0.6.6"]
 Makie = "0.21-0.22"
 
diff --git a/V/VLBISkyModels/WeakDeps.toml b/V/VLBISkyModels/WeakDeps.toml
index a58cb132011bed1..bfab8ce44fbc1e1 100644
--- a/V/VLBISkyModels/WeakDeps.toml
+++ b/V/VLBISkyModels/WeakDeps.toml
@@ -6,3 +6,6 @@ FINUFFT = "d8beea63-0952-562e-9c6a-8e8ef7364055"
 
 ["0.6.17 - 0"]
 NonuniformFFTs = "cd96f58b-6017-4a02-bb9e-f4d81626177f"
+
+["0.6.21 - 0"]
+Reactant = "3c362404-f566-11ee-1572-e11a4b42c853"