diff --git a/conda/artiq-dev/meta.yaml b/conda/artiq-dev/meta.yaml
index e244a3cd5..c13fdb93e 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 0.4
     - misoc 0.3
     - binutils-or1k-linux
diff --git a/conda/artiq/meta.yaml b/conda/artiq/meta.yaml
index 85c027156..218d79dbe 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 0.10.0.dev py35_24