diff --git a/source/dataman/json.hpp b/source/dataman/json.hpp
index 86a62c0b065b525d9686b623b44e2656be74f5d8..c695ce2156e2595ea40ca2e5528c11ff9dcdf64a 100644
--- a/source/dataman/json.hpp
+++ b/source/dataman/json.hpp
@@ -63,7 +63,7 @@ SOFTWARE.
     "unsupported Clang version - see https://github.com/nlohmann/json#supported-compilers"
 #endif
 #elif defined(__GNUC__)
-#if (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) < 40900
+#if (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) < 40805
 #error                                                                         \
     "unsupported GCC version - see https://github.com/nlohmann/json#supported-compilers"
 #endif