diff --git a/build-constraints.yaml b/build-constraints.yaml
index eeb35670..dfbef285 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3940,9 +3940,6 @@ package-flags:
         simplelocalnet: true
         p2p: true
 
-    logfloat:
-        splitbase: true
-
     curl:
         new-base: true
 
@@ -3962,10 +3959,6 @@ package-flags:
     hxt-relaxng:
         network-uri: true
 
-    pandoc:
-        https: true
-        old-locale: false
-
     text:
         integer-simple: false
 
@@ -3975,12 +3968,6 @@ package-flags:
     time-locale-compat:
         old-locale: false
 
-    th-data-compat:
-        template-haskell-210: false
-        template-haskell-212: true
-    th-reify-compat:
-        template-haskell-210: false
-
     HsOpenSSL:
         fast-bignum: false
 
@@ -4015,7 +4002,7 @@ package-flags:
         containers: true
 
     mintty:
-        win32-2-5: true
+        win32-2-5-3: true
 
     cassava:
         bytestring--lt-0_10_4: false