diff -up Rsamtools/Rsamtools/DESCRIPTION.zlibbioc Rsamtools/Rsamtools/DESCRIPTION
--- Rsamtools/Rsamtools/DESCRIPTION.zlibbioc	2017-05-31 09:46:14.723052203 -0400
+++ Rsamtools/Rsamtools/DESCRIPTION	2017-05-31 09:46:54.760046699 -0400
@@ -17,7 +17,7 @@ LazyLoad: yes
 Depends: methods, GenomeInfoDb (>= 1.1.3), GenomicRanges (>= 1.21.6),
         Biostrings (>= 2.37.1)
 Imports: utils, BiocGenerics (>= 0.1.3), S4Vectors (>= 0.13.8), IRanges
-        (>= 2.3.7), XVector (>= 0.15.1), zlibbioc, bitops, BiocParallel
+        (>= 2.3.7), XVector (>= 0.15.1), bitops, BiocParallel
 Suggests: GenomicAlignments, ShortRead (>= 1.19.10), GenomicFeatures,
         TxDb.Dmelanogaster.UCSC.dm3.ensGene, KEGG.db,
         TxDb.Hsapiens.UCSC.hg18.knownGene, RNAseqData.HNRNPC.bam.chr14,
diff -up Rsamtools/Rsamtools/NAMESPACE.zlibbioc Rsamtools/Rsamtools/NAMESPACE
--- Rsamtools/Rsamtools/NAMESPACE.zlibbioc	2017-04-24 16:39:52.000000000 -0400
+++ Rsamtools/Rsamtools/NAMESPACE	2017-05-31 09:46:14.723052203 -0400
@@ -2,8 +2,6 @@ useDynLib(Rsamtools, .registration=TRUE)
 
 import(methods)
 
-import(zlibbioc)
-
 importFrom(bitops, bitAnd)
 
 importFrom(utils, read.table)           # normalizePath --> base in R-2.13