diff --git a/conda/artiq-dev/meta.yaml b/conda/artiq-dev/meta.yaml
index 26a48f040..143a46b74 100644
--- a/conda/artiq-dev/meta.yaml
+++ b/conda/artiq-dev/meta.yaml
@@ -12,7 +12,7 @@ build:
 
 requirements:
   run:
-    - python 3.5.2
+    - python 3.5.3
     - setuptools
     - migen 0.5.dev py_57+gitd4afdeb
     - misoc 0.6.dev py_17+git2d3f62f
diff --git a/conda/artiq-doc.yaml b/conda/artiq-doc.yaml
index 5ebedd859..920618d1a 100644
--- a/conda/artiq-doc.yaml
+++ b/conda/artiq-doc.yaml
@@ -6,7 +6,7 @@ channels:
   - m-labs/label/main
   - defaults
 dependencies:
-  - python=3.5.2
+  - python=3.5.3
   - sphinx=1.4.8
   - sphinx-argparse
   - sphinxcontrib-wavedrom
diff --git a/conda/artiq/meta.yaml b/conda/artiq/meta.yaml
index e1e2c3b41..703f73b22 100644
--- a/conda/artiq/meta.yaml
+++ b/conda/artiq/meta.yaml
@@ -12,10 +12,10 @@ build:
 
 requirements:
   build:
-    - python >=3.5.2
+    - python 3.5.3
     - setuptools
   run:
-    - python >=3.5.2
+    - python 3.5.3
     - llvmlite-artiq 0.12.0.dev py35_30
     - binutils-or1k-linux
     - pythonparser 1.0