diff --git a/build/pkgs/_prereq/distros/conda.txt b/build/pkgs/_prereq/distros/conda.txt
index d85e37c8959..e8fcb099093 100644
--- a/build/pkgs/_prereq/distros/conda.txt
+++ b/build/pkgs/_prereq/distros/conda.txt
@@ -7,7 +7,7 @@
 # One package per line. No need to escape special characters.
 # Everything on a line after a # character is ignored.
 #
-compilers
+compilers<=1.6.0 # 1.7 pulls in c-compiler v.16
 make
 m4
 perl