diff --git a/Project.toml b/Project.toml
index fd40095..e09541a 100644
--- a/Project.toml
+++ b/Project.toml
@@ -12,12 +12,15 @@ MuladdMacro = "46d2c3a1-f734-5fdb-9937-b9b9aeba4221"
 Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 
 [compat]
-ERFA = "^0.4.0"
-EarthOrientation = "^0.6.0"
+ERFA = "^0.4"
+EarthOrientation = "^0.6"
+ItemGraphs = "^0.4"
 LeapSeconds = "^1.1"
-MacroTools = "^0.5.0"
-MuladdMacro = "^0.2.0"
-Reexport = "^0.2.0"
+MacroTools = "^0.5"
+Measurements = "^2.2"
+MuladdMacro = "^0.2"
+Reexport = "^0.2"
+SPICE = "^0.1.1"
 julia = "^1"
 
 [extras]