diff --git a/AbstractXsdTypes.jl/Project.toml b/AbstractXsdTypes.jl/Project.toml
index 38c2d36..6df5864 100644
--- a/AbstractXsdTypes.jl/Project.toml
+++ b/AbstractXsdTypes.jl/Project.toml
@@ -8,5 +8,6 @@ Format = "1fa38f19-a742-5d3f-a2b9-30dd87b9d5f8"
 Memoization = "6fafb56a-5788-4b4e-91ca-c0cea6611c73"
 
 [compat]
+Julia = "1.6"
 Format = "1"
 Memoization = "0.2"
diff --git a/XmlStructLoader.jl/Project.toml b/XmlStructLoader.jl/Project.toml
index e305c50..c520191 100644
--- a/XmlStructLoader.jl/Project.toml
+++ b/XmlStructLoader.jl/Project.toml
@@ -14,3 +14,6 @@ Parsers = "69de0a69-1ddd-5017-9359-2bf0b02dc9f0"
 Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 TimeZones = "f269a46b-ccf7-5d73-abea-4c690281aa53"
 URIs = "5c2747f8-b7ea-4ff2-ba2e-563bfd36b1d4"
+
+[compat]
+Julia = "1.6"
diff --git a/XmlStructWriter.jl/Project.toml b/XmlStructWriter.jl/Project.toml
index a4f35a9..5a31adc 100644
--- a/XmlStructWriter.jl/Project.toml
+++ b/XmlStructWriter.jl/Project.toml
@@ -9,3 +9,6 @@ Format = "1fa38f19-a742-5d3f-a2b9-30dd87b9d5f8"
 LightXML = "9c8b4983-aa76-5018-a973-4c85ecc9e179"
 Printf = "de0858da-6303-5e67-8744-51eddeeeb8d7"
 TimeZones = "f269a46b-ccf7-5d73-abea-4c690281aa53"
+
+[compat]
+Julia = "1.6"
diff --git a/XsdToStruct.jl/Project.toml b/XsdToStruct.jl/Project.toml
index 91a9232..3a7459a 100644
--- a/XsdToStruct.jl/Project.toml
+++ b/XsdToStruct.jl/Project.toml
@@ -9,3 +9,6 @@ Dates = "ade2ca70-3891-5945-98fb-dc099432e06a"
 Downloads = "f43a241f-c20a-4ad4-852c-f6b1247861c6"
 LightXML = "9c8b4983-aa76-5018-a973-4c85ecc9e179"
 TOML = "fa267f1f-6049-4f14-aa54-33bafae1ed76"
+
+[compat]
+Julia = "1.6"