diff --git a/conda/artiq-kc705-nist_clock/meta.yaml b/conda/artiq-kc705-nist_clock/meta.yaml
index 940a5f5b3..673f61257 100644
--- a/conda/artiq-kc705-nist_clock/meta.yaml
+++ b/conda/artiq-kc705-nist_clock/meta.yaml
@@ -12,7 +12,7 @@ build:
 
 requirements:
   build:
-    - migen 0.2
+    - migen 0.4
     - misoc 0.3
     - llvm-or1k
     - binutils-or1k-linux >=2.27
diff --git a/conda/artiq-kc705-nist_qc1/meta.yaml b/conda/artiq-kc705-nist_qc1/meta.yaml
index 21127da72..aa577ef8d 100644
--- a/conda/artiq-kc705-nist_qc1/meta.yaml
+++ b/conda/artiq-kc705-nist_qc1/meta.yaml
@@ -12,7 +12,7 @@ build:
 
 requirements:
   build:
-    - migen 0.2
+    - migen 0.4
     - misoc 0.3
     - llvm-or1k
     - binutils-or1k-linux >=2.27
diff --git a/conda/artiq-kc705-nist_qc2/meta.yaml b/conda/artiq-kc705-nist_qc2/meta.yaml
index d4cf04425..7dce4b74f 100644
--- a/conda/artiq-kc705-nist_qc2/meta.yaml
+++ b/conda/artiq-kc705-nist_qc2/meta.yaml
@@ -12,7 +12,7 @@ build:
 
 requirements:
   build:
-    - migen 0.2
+    - migen 0.4
     - misoc 0.3
     - llvm-or1k
     - binutils-or1k-linux >=2.27
diff --git a/conda/artiq-pipistrello-nist_qc1/meta.yaml b/conda/artiq-pipistrello-nist_qc1/meta.yaml
index 01521b91a..14241a705 100644
--- a/conda/artiq-pipistrello-nist_qc1/meta.yaml
+++ b/conda/artiq-pipistrello-nist_qc1/meta.yaml
@@ -12,7 +12,7 @@ build:
 
 requirements:
   build:
-    - migen 0.2
+    - migen 0.4
     - misoc 0.3
     - llvm-or1k
     - binutils-or1k-linux >=2.27