diff --git a/Project.toml b/Project.toml
index d936c88a76..f0d8f7a27a 100644
--- a/Project.toml
+++ b/Project.toml
@@ -35,7 +35,7 @@ DataFrames = "1"
 Dates = "1"
 EnumX = "1"
 HiGHS = "=1.23.0"
-JSON = "0.21"
+JSON = "0.21, 1"
 JuMP = "1"
 LinearAlgebra = "1"
 LoggingPolyglot = "0.3"