diff --git a/conda/artiq-dev/meta.yaml b/conda/artiq-dev/meta.yaml
index da3a623b8..8477fd41f 100644
--- a/conda/artiq-dev/meta.yaml
+++ b/conda/artiq-dev/meta.yaml
@@ -13,7 +13,7 @@ build:
 requirements:
   run:
     - python >=3.5.3,<3.6
-    - setuptools
+    - setuptools 33.1.1
     - migen 0.5.dev py_57+gitd4afdeb
     - misoc 0.6.dev py_17+git2d3f62f
     - jesd204b 0.3
diff --git a/conda/artiq/meta.yaml b/conda/artiq/meta.yaml
index 5cdafa2db..a2895825e 100644
--- a/conda/artiq/meta.yaml
+++ b/conda/artiq/meta.yaml
@@ -13,7 +13,7 @@ build:
 requirements:
   build:
     - python >=3.5.3,<3.6
-    - setuptools
+    - setuptools 33.1.1
   run:
     - python >=3.5.3,<3.6
     - llvmlite-artiq 0.12.0.dev py35_30