diff --git a/x11/library/mesa/pspec.xml b/x11/library/mesa/pspec.xml
index b6b36d69ea..5d4eaf3f42 100644
--- a/x11/library/mesa/pspec.xml
+++ b/x11/library/mesa/pspec.xml
@@ -26,6 +26,7 @@
             <Dependency>openssl-devel</Dependency>
             <Dependency>expat-devel</Dependency>
             <Dependency>libXt-devel</Dependency>
+            <Dependency>libpng-devel</Dependency>
             <Dependency>libcap-devel</Dependency>
             <Dependency>libdrm-devel</Dependency>
             <Dependency>libXext-devel</Dependency>
@@ -89,6 +90,7 @@
             <Dependency>expat</Dependency>
             <Dependency>eudev</Dependency>
             <Dependency>libXv</Dependency>
+            <Dependency>libpng</Dependency>
             <Dependency>libX11</Dependency>
             <Dependency>libdrm</Dependency>
             <Dependency>libgcc</Dependency>