diff --git a/build-constraints.yaml b/build-constraints.yaml
index 3b694946..596b4b32 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -7835,7 +7835,6 @@ packages:
         - tls-session-manager < 0.1.0
         - smtp-mail < 0.5.0.1
         - pusher-http-haskell < 2.1.0.22
-        - mysql-haskell < 1.2.1
         - wreq < 0.5.4.5
 
         # https://github.com/commercialhaskell/stackage/issues/7930
@@ -8004,6 +8003,10 @@ package-flags:
 
     path:
       os-string: true
+
+    # https://github.com/commercialhaskell/stackage/issues/7929
+    mysql-haskell:
+      crypton-1-1: false
 # end of package-flags
 
 # Special configure options for individual packages
@@ -9030,6 +9033,7 @@ expected-benchmark-failures:
     - lr-acts # 0.1
     - lz4 # https://github.com/fpco/stackage/issues/3510
     - memcache # 0.3.0.2
+    - mysql-haskell # https://github.com/winterland1989/mysql-haskell/issues/82
     - product-profunctors # 0.11.1.1
     - stateWriter # 0.4.0 https://github.com/bartavelle/stateWriter/issues/5
     - ua-parser # 0.7.7.0 compile fail against aeson 2