diff --git a/Dockerfile b/Dockerfile
index 1599779..08755a2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -127,6 +127,7 @@ RUN apt-get update && \
                     bc \
                     ca-certificates \
                     curl \
+                    gcc \
                     git \
                     gnupg \
                     lsb-release \
diff --git a/env.yml b/env.yml
index 9bb78c8..2190ea7 100644
--- a/env.yml
+++ b/env.yml
@@ -34,6 +34,6 @@ dependencies:
   - fsl-susan=2111.0
   - pip
   - pip:
-    - templateflow=24.0
+    - templateflow==24.0
 variables:
   FSLOUTPUTTYPE: NIFTI_GZ