diff --git a/conda/environment-qt6.devenv.yml b/conda/environment-qt6.devenv.yml
index 1331f54000..ad4025587c 100644
--- a/conda/environment-qt6.devenv.yml
+++ b/conda/environment-qt6.devenv.yml
@@ -57,6 +57,7 @@ dependencies:
 - xorg-x11-server-xvfb-cos7-aarch64    # [linux and aarch64]
 - sed                                  # [unix]
 - ccache
+- clang-format
 - cmake
 - coin3d
 - compilers
diff --git a/conda/environment.devenv.yml b/conda/environment.devenv.yml
index d13ff8ffd7..45dd753303 100644
--- a/conda/environment.devenv.yml
+++ b/conda/environment.devenv.yml
@@ -57,6 +57,7 @@ dependencies:
 - xorg-x11-server-xvfb-cos7-aarch64    # [linux and aarch64]
 - sed                                  # [unix]
 - ccache
+- clang-format
 - cmake
 - coin3d
 - compilers