diff --git a/CHANGELOG.md b/CHANGELOG.md
index bf3994651483df49283132b257777b3258dec5d1..ab2b0150deb662dab59bb7bab14cb2d009965e5b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,8 @@ that users understand how the changes affect the new version.
 
 version 2.2.0-dev
 ---------------------------
++ Add `minimumContigLength` input to PlotDenoisedCopyRatios and PlotModeledSegments.
++ Add `commonVariantSitesIndex` input to CollectAllelicCounts
 + Centrifuge: Fix issue where Centrifuge could not locate index files.
 + Increase default memory of BWA mem to 32G (was 16G).
 + Add `memory` input to fastqc task.
diff --git a/gatk.wdl b/gatk.wdl
index eff98bf8b1260f14d9691c2ebb92235916ad4c21..059c225e4ed4b2c0b86331fc1f90bf5341e4979d 100644
--- a/gatk.wdl
+++ b/gatk.wdl
@@ -295,6 +295,7 @@ task CollectAllelicCounts {
     input {
         String allelicCountsPath = "allelic_counts.tsv"
         File commonVariantSites
+        File? commonVariantSitesIndex
         File inputBam
         File inputBamIndex
         File referenceFasta
@@ -1129,6 +1130,7 @@ task PlotDenoisedCopyRatios {
         String outputPrefix
         File standardizedCopyRatios
         File denoisedCopyRatios
+        Int? minimumContigLength
 
         String memory = "32G"
         String javaXmx = "7G"
@@ -1143,6 +1145,7 @@ task PlotDenoisedCopyRatios {
         --standardized-copy-ratios ~{standardizedCopyRatios} \
         --denoised-copy-ratios ~{denoisedCopyRatios} \
         --sequence-dictionary ~{referenceFastaDict} \
+        ~{"--minimum-contig-length " + minimumContigLength} \
         --output ~{outputDir} \
         --output-prefix ~{outputPrefix}
     }
@@ -1183,6 +1186,7 @@ task PlotModeledSegments {
         File denoisedCopyRatios
         File segments
         File allelicCounts
+        Int? minimumContigLength
 
         String memory = "21G"
         String javaXmx = "7G"
@@ -1198,6 +1202,7 @@ task PlotModeledSegments {
         --allelic-counts ~{allelicCounts} \
         --segments ~{segments} \
         --sequence-dictionary ~{referenceFastaDict} \
+        ~{"--minimum-contig-length " + minimumContigLength} \
         --output ~{outputDir} \
         --output-prefix ~{outputPrefix}
     }