diff --git a/java.yaml b/java.yaml
index deebca3..2366f8d 100644
--- a/java.yaml
+++ b/java.yaml
@@ -8,10 +8,11 @@ data:
             - MIT
     dependencies:
         buildrequires:
-            bootstrap: master
+            bootstrap: f27
         requires:
-            platform: master
-            fonts: master
+            platform: f27
+            fonts: f27
+            X11-base: f27
     references:
         community: https://docs.pagure.org/modularity/
         documentation: https://github.com/modularity-modules/java
@@ -32,66 +33,27 @@ data:
                 - javapackages-tools
     components:
         rpms:
+            # copy-jdk-configs-3.2-1.fc27
             copy-jdk-configs:
                 rationale: Generated.
-                ref: f27
+                ref: ecc863bce52965d9b22f8bd524e0be2ae6e48dad
+            # giflib-4.1.6-19.fc27
             giflib:
                 rationale: Generated.
-                ref: f27
+                ref: fe469abbbc28f29b9ae8cc8c2a0d87ca4f5e41da
+            # java-1.8.0-openjdk-1.8.0.144-7.b01.fc27
             java-1.8.0-openjdk:
                 rationale: Generated.
-                ref: f27
+                ref: 283531e22c5ad643432eed85ca9e023aba860210
+            # javapackages-tools-5.0.0-7.fc27
             javapackages-tools:
                 rationale: Generated.
-                ref: f27
-            libfontenc:
-                rationale: Generated.
-                ref: f27
-            libICE:
-                rationale: Generated.
-                ref: f27
-            libSM:
-                rationale: Generated.
-                ref: f27
-            libX11:
-                rationale: Generated.
-                ref: f27
-            libXau:
-                rationale: Generated.
-                ref: f27
-            libxcb:
-                rationale: Generated.
-                ref: f27
-            libXcomposite:
-                rationale: Generated.
-                ref: f27
-            libXext:
-                rationale: Generated.
-                ref: f27
-            libXfont:
-                rationale: Generated.
-                ref: f27
-            libXi:
-                rationale: Generated.
-                ref: f27
-            libXrender:
-                rationale: Generated.
-                ref: f27
-            libXtst:
-                rationale: Generated.
-                ref: f27
+                ref: 01b45a61475e2a952750dea2fe8f8714d0090dfc
+            # lua-posix-33.3.1-7.fc27
             lua-posix:
                 rationale: Generated.
-                ref: f27
+                ref: 9365d326058c1f370a000d9463bcbc720e6bcec4
+            # ttmkfdir-3.0.9-51.fc27
             ttmkfdir:
                 rationale: Generated.
-                ref: f27
-            which:
-                rationale: Generated.
-                ref: f27
-            xorg-x11-fonts:
-                rationale: Generated.
-                ref: f27
-            xorg-x11-font-utils:
-                rationale: Generated.
-                ref: f27
+                ref: ef8ed8e754551aefa3c127569fe90123f01cc5eb