diff --git a/package.yml b/package.yml
--- a/package.yml
+++ b/package.yml
@@ -1,6 +1,6 @@
 name       : r
 version    : 3.5.1
-release    : 27
+release    : 28
 source     :
     - https://cran.r-project.org/src/base/R-3/R-3.5.1.tar.gz : 0463bff5eea0f3d93fa071f79c18d0993878fd4f2e18ae6cf22c1639d11457ed
 license    : GPL-2.0-or-later
@@ -20,22 +20,25 @@
     - pkgconfig(libtiff-4)
     - pkgconfig(libturbojpeg)
     - pkgconfig(pangocairo)
+    - pkgconfig(tk)
     - pkgconfig(xmu)
     - bzip2-devel
     - gfortran
     - libiconv-devel
     - openblas-devel
     - xdg-utils
-setup      : |
+environment: |
     unset LD_AS_NEEDED
+setup      : |
     %configure \
         --enable-R-shlib \
         --with-blas="-lopenblas" \
+        --with-tcl-config=%libdir%/tclConfig.sh \
+        --with-tk-config=%libdir%/tkConfig.sh \
         rdocdir=/usr/share/doc/R \
         rincludedir=/usr/include/R \
         rsharedir=/usr/share/R
 build      : |
-    unset LD_AS_NEEDED
     %make
 install    : |
     %make_install
diff --git a/pspec_x86_64.xml b/pspec_x86_64.xml
--- a/pspec_x86_64.xml
+++ b/pspec_x86_64.xml
@@ -2,8 +2,8 @@
     <Source>
         <Name>r</Name>
         <Packager>
-            <Name>Joey Riches</Name>
-            <Email>josephriches@gmail.com</Email>
+            <Name>F. von Gellhorn</Name>
+            <Email>flinux@vongellhorn.ch</Email>
         </Packager>
         <License>GPL-2.0-or-later</License>
         <PartOf>programming</PartOf>
@@ -1533,12 +1533,12 @@
         </Files>
     </Package>
     <History>
-        <Update release="27">
-            <Date>2018-10-21</Date>
+        <Update release="28">
+            <Date>2018-11-26</Date>
             <Version>3.5.1</Version>
             <Comment>Packaging update</Comment>
-            <Name>Joey Riches</Name>
-            <Email>josephriches@gmail.com</Email>
+            <Name>F. von Gellhorn</Name>
+            <Email>flinux@vongellhorn.ch</Email>
         </Update>
     </History>
 </PISI>
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