diff --git a/conda/artiq-kc705-nist_clock/meta.yaml b/conda/artiq-kc705-nist_clock/meta.yaml
index 08e1aa5ac..e2c9ff197 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
diff --git a/conda/artiq-kc705-nist_qc1/meta.yaml b/conda/artiq-kc705-nist_qc1/meta.yaml
index 9c41548e6..d7f3131bc 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
diff --git a/conda/artiq-kc705-nist_qc2/meta.yaml b/conda/artiq-kc705-nist_qc2/meta.yaml
index 65bc8bec5..d84dd4537 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
diff --git a/conda/artiq-pipistrello-nist_qc1/meta.yaml b/conda/artiq-pipistrello-nist_qc1/meta.yaml
index 1de804fc0..2e3ca4b8e 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