diff --git a/conda/beat-devel/meta.yaml b/conda/beat-devel/meta.yaml
index e44a0d71e4cd2dc45d6ee14550954a97256362f4..550edb9bbd046a0ea80417f966e953c4aa992eb0 100644
--- a/conda/beat-devel/meta.yaml
+++ b/conda/beat-devel/meta.yaml
@@ -1,8 +1,8 @@
 # The original copy of this list is in bob-devel recipe. Keep them synced please.
-{% set nopin = ['ca-certificates', 'certifi', 'openssl', 'libstdcxx-ng', 'libgcc-ng', 'libcxx', 'libcxxabi'] %}
+{% set nopin = ['ca-certificates', 'certifi', 'openssl', 'libstdcxx-ng', 'libgcc-ng', 'libgfortran-ng', 'libcxx', 'libcxxabi', 'libgfortran'] %}
 package:
   name: beat-devel
-  version: 2021.07.14
+  version: 2021.08.31
 
 build:
   # the build number must be zero all the time.
@@ -14,7 +14,7 @@ build:
 
 requirements:
   host:
-    - bob-devel 2021.07.14
+    - bob-devel 2021.08.31
     - python {{ python }}
     # the dependencies are pinned in bob-devel
     - docker-py
diff --git a/conda/bob-devel/meta.yaml b/conda/bob-devel/meta.yaml
index 3088db5621856809bec5847bc870a086c570e100..b1a0a3f974a0dbf71ca61f79934b72f8fd96c838 100644
--- a/conda/bob-devel/meta.yaml
+++ b/conda/bob-devel/meta.yaml
@@ -1,12 +1,12 @@
 # A copy of this list is in beat-devel and bob/bob as well. Keep them synced please.
-{% set nopin = ['ca-certificates', 'certifi', 'openssl', 'libstdcxx-ng', 'libgcc-ng', 'libcxx', 'libcxxabi'] %}
+{% set nopin = ['ca-certificates', 'certifi', 'openssl', 'libstdcxx-ng', 'libgcc-ng', 'libgfortran-ng', 'libcxx', 'libcxxabi', 'libgfortran'] %}
 package:
   name: bob-devel
   # please update the version of beat-devel and update bob-devel's version
   # there as well in the same merge request.
   # Then open an MR in bob/bob.devtools to put these new versions of bob-devel and
   # beat-devel in `bob/devtools/data/conda_build_config.yaml`
-  version: 2021.07.14
+  version: 2021.08.31
 
 build:
   # the build number must be zero all the time.
@@ -19,6 +19,8 @@ build:
 requirements:
   host:
     - python {{ python }}
+    - {{ compiler('c') }}
+    - {{ compiler('cxx') }}
 
     # Dependency list of bob and beat packages. Everything is pinned to allow
     # for better reproducibility.