diff --git a/build-constraints.yaml b/build-constraints.yaml
index 084c4dc2..6272d6ea 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -309,7 +309,7 @@ packages:
         - alex
         - async
         - base16-bytestring
-        # - c2hs # GHC 8.2.1 via shelly
+        - c2hs
         - csv-conduit
         - executable-hash
         - executable-path
@@ -1165,7 +1165,7 @@ packages:
         # - idris # bounds aeson
         - libffi
         - xmonad-contrib
-        # - shelly # GHC 8.2.1: time < 1.7
+        - shelly
 
         # - cairo # Cabal 2.0.0.2
         # - gio # Cabal 2.0.0.2
@@ -2212,8 +2212,7 @@ packages:
         - titlecase
 
     "Mark Fine <mark.fine@gmail.com> @markfine":
-        []
-        # - postgresql-schema # GHC 8.2.1 via shelly
+        - postgresql-schema
         # - sbp # build failure
 
     "Jinjing Wang <nfjinjing@gmail.com> @nfjinjing":
@@ -4151,7 +4150,6 @@ tell-me-when-its-released:
 - cryptohash-md5-0.11.100.1 # re-enable benchmarks, https://github.com/fpco/stackage/issues/2538#issuecomment-304458844
 - cryptohash-sha1-0.11.100.1 # re-enable benchmarks, https://github.com/fpco/stackage/issues/2538#issuecomment-304458844
 - cryptohash-sha256-0.11.100.1 # re-enable benchmarks, https://github.com/fpco/stackage/issues/2538#issuecomment-304458844
-- shelly-1.6.8.3 # re-enable shelly, c2hs, etc
 
 # Packages which should be hidden after registering, to avoid module name
 # conflicts. This is intended for at least two use cases: