diff --git a/README.md b/README.md
index dade530..1e7fb75 100644
--- a/README.md
+++ b/README.md
@@ -87,6 +87,8 @@ Ranges can be combined by both AND and OR
 
   - `>1.0.0 <2.0.0 || >3.0.0 !4.2.1` would match `1.2.3`, `1.9.9`, `3.1.1`, but not `4.2.1`, `2.1.1`
 
+Ranges operating on pre release versions can produce counter intuitive results. One might expect the range `>=1.0.0 <2.0.0` to always match versions with major version `1`. However, pre release versions are less than the release version, so `1.0.0-build.1` will not match, while `2.0.0-build.1` will. If a range will operate on pre release versions, be sure to include a pre release value of `0` making the desired range `>=1.0.0-0 <2.0.0-0`. Alternatively, the range `1.x` will match all versions with major version `1`.
+
 Range usage:
 
 ```
diff --git a/examples/main.go b/examples/main.go
index 72eefbe..b51f819 100644
--- a/examples/main.go
+++ b/examples/main.go
@@ -3,7 +3,7 @@ package main
 import (
 	"fmt"
 
-	"github.com/k14s/semver"
+	"github.com/carvel-dev/semver"
 )
 
 func main() {
diff --git a/v4/examples/main.go b/v4/examples/main.go
index 64c90d1..bc73523 100644
--- a/v4/examples/main.go
+++ b/v4/examples/main.go
@@ -3,7 +3,7 @@ package main
 import (
 	"fmt"
 
-	"github.com/k14s/semver/v4"
+	"github.com/carvel-dev/semver/v4"
 )
 
 func main() {
diff --git a/v4/range.go b/v4/range.go
index 95f7139..cee7b4b 100644
--- a/v4/range.go
+++ b/v4/range.go
@@ -67,8 +67,8 @@ func (vr *versionRange) rangeFunc() Range {
 // Range represents a range of versions.
 // A Range can be used to check if a Version satisfies it:
 //
-//     range, err := semver.ParseRange(">1.0.0 <2.0.0")
-//     range(semver.MustParse("1.1.1") // returns true
+//	range, err := semver.ParseRange(">1.0.0 <2.0.0")
+//	range(semver.MustParse("1.1.1") // returns true
 type Range func(Version) bool
 
 // OR combines the existing Range with another Range using logical OR.
@@ -108,7 +108,7 @@ func (rf Range) AND(f Range) Range {
 //
 // Ranges can be combined by both AND and OR
 //
-//  - `>1.0.0 <2.0.0 || >3.0.0 !4.2.1` would match `1.2.3`, `1.9.9`, `3.1.1`, but not `4.2.1`, `2.1.1`
+//   - `>1.0.0 <2.0.0 || >3.0.0 !4.2.1` would match `1.2.3`, `1.9.9`, `3.1.1`, but not `4.2.1`, `2.1.1`
 func ParseRange(s string) (Range, error) {
 	parts := splitAndTrim(s)
 	orParts, err := splitORParts(parts)
@@ -269,10 +269,10 @@ func createVersionFromWildcard(vStr string) string {
 
 	// handle 1.x
 	if len(parts) == 2 {
-		return vStr2 + ".0"
+		vStr2 = vStr2 + ".0"
 	}
 
-	return vStr2
+	return vStr2 + "-0"
 }
 
 // incrementMajorVersion will increment the major version
diff --git a/v4/range_test.go b/v4/range_test.go
index 2f44de4..6d20759 100644
--- a/v4/range_test.go
+++ b/v4/range_test.go
@@ -218,8 +218,8 @@ func TestCreateVersionFromWildcard(t *testing.T) {
 		i string
 		s string
 	}{
-		{"1.2.x", "1.2.0"},
-		{"1.x", "1.0.0"},
+		{"1.2.x", "1.2.0-0"},
+		{"1.x", "1.0.0-0"},
 	}
 
 	for _, tc := range tests {
@@ -272,18 +272,18 @@ func TestExpandWildcardVersion(t *testing.T) {
 		o [][]string
 	}{
 		{[][]string{{"foox"}}, nil},
-		{[][]string{{">=1.2.x"}}, [][]string{{">=1.2.0"}}},
-		{[][]string{{"<=1.2.x"}}, [][]string{{"<1.3.0"}}},
-		{[][]string{{">1.2.x"}}, [][]string{{">=1.3.0"}}},
-		{[][]string{{"<1.2.x"}}, [][]string{{"<1.2.0"}}},
-		{[][]string{{"!=1.2.x"}}, [][]string{{"<1.2.0", ">=1.3.0"}}},
-		{[][]string{{">=1.x"}}, [][]string{{">=1.0.0"}}},
-		{[][]string{{"<=1.x"}}, [][]string{{"<2.0.0"}}},
-		{[][]string{{">1.x"}}, [][]string{{">=2.0.0"}}},
-		{[][]string{{"<1.x"}}, [][]string{{"<1.0.0"}}},
-		{[][]string{{"!=1.x"}}, [][]string{{"<1.0.0", ">=2.0.0"}}},
-		{[][]string{{"1.2.x"}}, [][]string{{">=1.2.0", "<1.3.0"}}},
-		{[][]string{{"1.x"}}, [][]string{{">=1.0.0", "<2.0.0"}}},
+		{[][]string{{">=1.2.x"}}, [][]string{{">=1.2.0-0"}}},
+		{[][]string{{"<=1.2.x"}}, [][]string{{"<1.3.0-0"}}},
+		{[][]string{{">1.2.x"}}, [][]string{{">=1.3.0-0"}}},
+		{[][]string{{"<1.2.x"}}, [][]string{{"<1.2.0-0"}}},
+		{[][]string{{"!=1.2.x"}}, [][]string{{"<1.2.0-0", ">=1.3.0-0"}}},
+		{[][]string{{">=1.x"}}, [][]string{{">=1.0.0-0"}}},
+		{[][]string{{"<=1.x"}}, [][]string{{"<2.0.0-0"}}},
+		{[][]string{{">1.x"}}, [][]string{{">=2.0.0-0"}}},
+		{[][]string{{"<1.x"}}, [][]string{{"<1.0.0-0"}}},
+		{[][]string{{"!=1.x"}}, [][]string{{"<1.0.0-0", ">=2.0.0-0"}}},
+		{[][]string{{"1.2.x"}}, [][]string{{">=1.2.0-0", "<1.3.0-0"}}},
+		{[][]string{{"1.x"}}, [][]string{{">=1.0.0-0", "<2.0.0-0"}}},
 	}
 
 	for _, tc := range tests {
@@ -461,6 +461,22 @@ func TestParseRange(t *testing.T) {
 			{"1.2.6", false},
 			{"1.3.0", true},
 		}},
+		{"1.3.x", []tv{
+			{"1.2.0", false},
+			{"1.3.0-0", true},
+			{"1.3.0", true},
+			{"1.3.9", true},
+			{"1.4.0-0", false},
+			{"1.4.0", false},
+		}},
+		{"2.x", []tv{
+			{"1.9.9", false},
+			{"2.0.0-0", true},
+			{"2.0.0", true},
+			{"2.9.9", true},
+			{"3.0.0-0", false},
+			{"3.0.0", false},
+		}},
 		// Combined Expressions
 		{">1.2.2 <1.2.4 || >=2.0.0", []tv{
 			{"1.2.2", false},