diff --git a/.gitlab/os-linux.yml b/.gitlab/os-linux.yml
index 528f4183f74fc1e7bdfca227194a759e06d8c15a..a92459c3f454baf891b759260877ae2c2f39de54 100644
--- a/.gitlab/os-linux.yml
+++ b/.gitlab/os-linux.yml
@@ -91,7 +91,8 @@
     # Remove `freetype-devel` from the image; it confuses our `fontconfig`
     # builds. Remove it here to avoid rebuilding the image in the face of
     # CentOS 7's EOL.
-    - yum -y remove freetype-devel
+    # Also remove `libpng-devel` to avoid building Qt against it.
+    - yum -y remove freetype-devel libpng-devel
 
 .cmake_build_linux:
     stage: build