diff --git a/coin/provisioning/qtci-windows-10-x86/conanfiles/qtwebkit.txt b/coin/provisioning/qtci-windows-10-x86/conanfiles/qtwebkit.txt
index 5def5b33..27d3bfd9 100644
--- a/coin/provisioning/qtci-windows-10-x86/conanfiles/qtwebkit.txt
+++ b/coin/provisioning/qtci-windows-10-x86/conanfiles/qtwebkit.txt
@@ -3,6 +3,7 @@ icu/65.1@qtproject/stable
 libxml2/2.9.10@qtproject/stable
 libxslt/1.1.34@qtproject/stable
 libjpeg-turbo/2.0.3@qtproject/stable
+zlib/1.2.11@qtproject/stable
 
 [generators]
 cmake
@@ -21,6 +22,8 @@ libxslt:shared=True
 
 libjpeg-turbo:shared=False
 
+zlib:shared=False
+
 [imports]
 bin, icudt65.dll -> ./bin
 bin, icuin65.dll -> ./bin
diff --git a/coin/provisioning/qtci-windows-10-x86_64/conanfiles/qtwebkit.txt b/coin/provisioning/qtci-windows-10-x86_64/conanfiles/qtwebkit.txt
index 491c9375..eb0de7e6 100644
--- a/coin/provisioning/qtci-windows-10-x86_64/conanfiles/qtwebkit.txt
+++ b/coin/provisioning/qtci-windows-10-x86_64/conanfiles/qtwebkit.txt
@@ -3,6 +3,7 @@ icu/65.1@qtproject/stable
 libxml2/2.9.10@qtproject/stable
 libxslt/1.1.34@qtproject/stable
 libjpeg-turbo/2.0.3@qtproject/stable
+zlib/1.2.11@qtproject/stable
 
 [generators]
 cmake
@@ -21,6 +22,8 @@ libxslt:shared=True
 
 libjpeg-turbo:shared=False
 
+zlib:shared=False
+
 [imports]
 bin, icudt65.dll -> ./bin
 bin, icuin65.dll -> ./bin