diff --git a/build-constraints.yaml b/build-constraints.yaml
index bf2455a3..12c7a257 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3377,7 +3377,6 @@ packages:
         - hsshellscript < 0 # build failure with GHC 8.4
         - hstatistics < 0 # build failure with GHC 8.4
         - hw-fingertree < 0 # build failure with GHC 8.4
-        - json < 0 # build failure with GHC 8.4
         - language-fortran < 0 # build failure with GHC 8.4
         - language-glsl < 0 # build failure with GHC 8.4
         - median-stream < 0 # build failure with GHC 8.4