diff --git a/src/json.hpp b/src/json.hpp
index eaa3a44e1..92b913a84 100644
--- a/src/json.hpp
+++ b/src/json.hpp
@@ -61,7 +61,7 @@ SOFTWARE.
     #endif
 #elif defined(__GNUC__)
     #define GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
-    #if GCC_VERSION < 48000
+    #if GCC_VERSION < 49000
         #error "unsupported GCC version - see https://github.com/nlohmann/json#supported-compilers"
     #endif
 #endif
diff --git a/src/json.hpp.re2c b/src/json.hpp.re2c
index 9c94a2ba0..cc4df5de2 100644
--- a/src/json.hpp.re2c
+++ b/src/json.hpp.re2c
@@ -61,7 +61,7 @@ SOFTWARE.
     #endif
 #elif defined(__GNUC__)
     #define GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
-    #if GCC_VERSION < 48000
+    #if GCC_VERSION < 49000
         #error "unsupported GCC version - see https://github.com/nlohmann/json#supported-compilers"
     #endif
 #endif