diff --git a/var/spack/repos/builtin/packages/r-grbase/package.py b/var/spack/repos/builtin/packages/r-grbase/package.py
index fc841a3c08..eb9728fe94 100644
--- a/var/spack/repos/builtin/packages/r-grbase/package.py
+++ b/var/spack/repos/builtin/packages/r-grbase/package.py
@@ -7,20 +7,38 @@
 
 
 class RGrbase(RPackage):
-    """gRbase: A Package for Graphical Modelling in R"""
+    """A Package for Graphical Modelling in R
+
+    The 'gRbase' package provides graphical modelling features used by e.g. the
+    packages 'gRain', 'gRim' and 'gRc'. 'gRbase' implements graph algorithms
+    including (i) maximum cardinality search (for marked and unmarked graphs).
+    (ii) moralization, (iii) triangulation, (iv) creation of junction tree.
+    'gRbase' facilitates array operations, 'gRbase' implements functions for
+    testing for conditional independence. 'gRbase' illustrates how hierarchical
+    log-linear models may be implemented and describes concept of graphical
+    meta data.  The facilities of the package are documented in the book by
+    Hojsgaard, Edwards and Lauritzen (2012, <doi:10.1007/978-1-4614-2299-0>)
+    and in the paper by  Dethlefsen and Hojsgaard, (2005,
+    <doi:10.18637/jss.v014.i17>).  Please see 'citation("gRbase")' for citation
+    details.  NOTICE  'gRbase' requires that the packages graph, 'Rgraphviz'
+    and 'RBGL' are installed from 'bioconductor'; for installation instructions
+    please refer to the web page given below."""
 
     homepage = "http://people.math.aau.dk/~sorenh/software/gR/"
     url      = "https://cloud.r-project.org/src/contrib/gRbase_1.8-3.4.tar.gz"
     list_url = "https://cloud.r-project.org/src/contrib/Archive/gRbase"
 
+    version('1.8-6.7', sha256='aaafc7e1b521de60e1a57c0175ac64d4283850c3273bd14774cf24dabc743388')
     version('1.8-3.4', sha256='d35f94c2fb7cbd4ce3991570424dfe6723a849658da32e13df29f53b6ea2cc2c')
 
     depends_on('r@3.0.2:', type=('build', 'run'))
+    depends_on('r@3.6.0:', when='@1.8-6.7:', type=('build', 'run'))
     depends_on('r-graph', type=('build', 'run'))
+    depends_on('r-rgraphviz', when='@1.8-6.7:', type=('build', 'run'))
+    depends_on('r-rbgl', type=('build', 'run'))
     depends_on('r-igraph', type=('build', 'run'))
     depends_on('r-magrittr', type=('build', 'run'))
     depends_on('r-matrix', type=('build', 'run'))
-    depends_on('r-rbgl', type=('build', 'run'))
     depends_on('r-rcpp@0.11.1:', type=('build', 'run'))
-    depends_on('r-rcpparmadillo', type=('build', 'run'))
     depends_on('r-rcppeigen', type=('build', 'run'))
+    depends_on('r-rcpparmadillo', type=('build', 'run'))