diff --git a/build-constraints.yaml b/build-constraints.yaml
index 8cce1853..0ba24e0b 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1272,12 +1272,12 @@ packages:
         - hmatrix-gsl-stats
         - hsignal
         - hstatistics
-        # GHC 8 - plot
-        # via plot - plot-gtk
-        # via plot - plot-gtk3
+        - plot
+        - plot-gtk
+        - plot-gtk3
 
         - vector-buffer
-        # 0.1.2.1 Compilation failure against hmatrix https://github.com/amcphail/hmatrix-repa/issues/2 - hmatrix-repa
+        - hmatrix-repa
 
     "Noam Lewis <jones.noamle@gmail.com> @sinelaw":
         # via hxt-tagsoup - xml-to-json
@@ -1630,7 +1630,8 @@ packages:
         # Test suite needs a running neo4j server with auth disabled
         # unfortunately the cabal package name and the github repo don't have the exact same name
         # package name is haskell-neo4j-client github name is haskell-neo4j-rest-client
-        - haskell-neo4j-client
+        []
+        # - haskell-neo4j-client # https://github.com/asilvestre/haskell-neo4j-rest-client/issues/27
 
     "Alexey Khudyakov <alexey.skladnoy@gmail.com> @Shimuuar":
         - histogram-fill
@@ -2222,8 +2223,8 @@ packages:
     "Lennart Kolmodin <kolmodin@gmail.com> @kolmodin":
         - binary-bits
 
-    "Nicolas Trangez <ikke@nicolast.be> @NicolasT":
-        - reedsolomon
+    # "Nicolas Trangez <ikke@nicolast.be> @NicolasT":
+        # GHC 8 - reedsolomon
 
     "Alp Mestanogullari <alpmestan@gmail.com> @alpmestan":
         - taggy
@@ -2487,9 +2488,6 @@ packages:
     "Ondrej Palkovsky <palkovsky.ondrej@gmail.com> @ondrap":
         - json-stream
 
-    "Philipp Balzarek <p.balzarek@googlemail.com>":
-        - xml-picklers
-
     # If you stop maintaining a package you can move it here.
     # It will then be disabled if it starts causing problems.
     # See https://github.com/fpco/stackage/issues/1056
@@ -2526,6 +2524,9 @@ packages:
         - diagrams-svg < 1.4.0.4
         - optparse-generic < 1.1.2
 
+        # https://github.com/fpco/stackage/issues/1816
+        - mersenne-random-pure64 < 0.2.1.0
+
         # https://github.com/fpco/stackage/issues/1833
         - http-api-data < 0.3
 
@@ -2545,6 +2546,9 @@ packages:
         # https://github.com/fpco/stackage/issues/1876
         - fixed-vector < 0.9
 
+        # https://github.com/fpco/stackage/issues/1879
+        - QuickCheck < 2.9.2
+
         # https://github.com/fpco/stackage/issues/1902
         - hspec < 2.2.4
         - hspec-core < 2.2.4
@@ -2558,9 +2562,6 @@ packages:
         - servant-docs < 0.9
         - servant-js < 0.9
         - language-puppet < 1.3.2
-
-        # https://github.com/fpco/stackage/issues/1920
-        - hw-prim < 0.1.0.1
 # end of packages