diff --git a/bin/run-ci.sh b/bin/run-ci.sh
index 5ef39bd40..3e415a2c5 100755
--- a/bin/run-ci.sh
+++ b/bin/run-ci.sh
@@ -19,7 +19,7 @@ CABAL_BUILD_OPTIONS="--flag limit-build-mem"
 #------------------------------------------------------------------------------
 
 # XXX take these from command line
-GHC_PRIME_NIX="ghc8104"
+GHC_PRIME_NIX="ghc8107"
 GHC_PRIME_VER="8.10"
 JOBS=1