diff --git a/README.md b/README.md
index a105d737..c36e8925 100644
--- a/README.md
+++ b/README.md
@@ -87,7 +87,7 @@ See [example.gdextension](test/project/example.gdextension) used in the test pro
 [configuration]
 
 entry_symbol = "example_library_init"
-compatibility_minimum = 4.1
+compatibility_minimum = "4.1"
 
 [libraries]
 
diff --git a/test/project/example.gdextension b/test/project/example.gdextension
index 90fd53a0..99c1746d 100644
--- a/test/project/example.gdextension
+++ b/test/project/example.gdextension
@@ -1,7 +1,7 @@
 [configuration]
 
 entry_symbol = "example_library_init"
-compatibility_minimum = 4.1
+compatibility_minimum = "4.1"
 
 [libraries]