diff --git a/bob/devtools/bootstrap.py b/bob/devtools/bootstrap.py
index a5d2b0adad65b3433e36beca0024cccde328835c..7d3ae0f74f87c409465dd18f3b6f80eb33d3eee8 100644
--- a/bob/devtools/bootstrap.py
+++ b/bob/devtools/bootstrap.py
@@ -422,7 +422,7 @@ if __name__ == "__main__":
     with open(condarc, "wt") as f:
         f.write(_BASE_CONDARC)
 
-    conda_version = "4"
+    conda_version = "4.6"
     conda_build_version = "3.16"
     conda_verify_version = "3"
 
diff --git a/conda/meta.yaml b/conda/meta.yaml
index ab99512be00d7ed3a0960eb5dc494d168638e6af..4c36a3c4a60ec73b35d4babf327c3e48c59bff64 100644
--- a/conda/meta.yaml
+++ b/conda/meta.yaml
@@ -31,7 +31,7 @@ requirements:
     - black >=19
     - click >=7
     - click-plugins
-    - conda=4
+    - conda=4.6
     - conda-build=3.16
     - conda-verify=3
     - certifi