diff --git a/internal/test/issues/issue-312/issue.gen.go b/internal/test/issues/issue-312/issue.gen.go
index f0285c071f..787a65e8bc 100644
--- a/internal/test/issues/issue-312/issue.gen.go
+++ b/internal/test/issues/issue-312/issue.gen.go
@@ -488,7 +488,7 @@ func RegisterHandlersWithBaseURL(router EchoRouter, si ServerInterface, baseURL
 	}
 
 	router.GET(baseURL+"/pets/:petId", wrapper.GetPet)
-	router.POST(baseURL+"/pets:validate", wrapper.ValidatePets)
+	router.POST(baseURL+"/pets\\:validate", wrapper.ValidatePets)
 
 }
 
diff --git a/pkg/codegen/utils.go b/pkg/codegen/utils.go
index e82d5e3e3c..85c4a62333 100644
--- a/pkg/codegen/utils.go
+++ b/pkg/codegen/utils.go
@@ -543,6 +543,7 @@ func SwaggerUriToIrisUri(uri string) string {
 //	{?param}
 //	{?param*}
 func SwaggerUriToEchoUri(uri string) string {
+	uri = strings.ReplaceAll(uri, ":", "\\\\:")
 	return pathParamRE.ReplaceAllString(uri, ":$1")
 }
 
@@ -591,6 +592,7 @@ func SwaggerUriToChiUri(uri string) string {
 //	{?param}
 //	{?param*}
 func SwaggerUriToGinUri(uri string) string {
+	uri = strings.ReplaceAll(uri, ":", "\\\\:")
 	return pathParamRE.ReplaceAllString(uri, ":$1")
 }
 
diff --git a/pkg/codegen/utils_test.go b/pkg/codegen/utils_test.go
index 28f9f3f3dd..e4bd8e5587 100644
--- a/pkg/codegen/utils_test.go
+++ b/pkg/codegen/utils_test.go
@@ -368,6 +368,9 @@ func TestSwaggerUriToEchoUri(t *testing.T) {
 	assert.Equal(t, "/path/:arg/foo", SwaggerUriToEchoUri("/path/{;arg*}/foo"))
 	assert.Equal(t, "/path/:arg/foo", SwaggerUriToEchoUri("/path/{?arg}/foo"))
 	assert.Equal(t, "/path/:arg/foo", SwaggerUriToEchoUri("/path/{?arg*}/foo"))
+
+	// Make sure literal colons are escaped
+	assert.Equal(t, "/path/:arg\\\\:foo", SwaggerUriToGinUri("/path/{arg}:foo"))
 }
 
 func TestSwaggerUriToGinUri(t *testing.T) {
@@ -385,6 +388,9 @@ func TestSwaggerUriToGinUri(t *testing.T) {
 	assert.Equal(t, "/path/:arg/foo", SwaggerUriToGinUri("/path/{;arg*}/foo"))
 	assert.Equal(t, "/path/:arg/foo", SwaggerUriToGinUri("/path/{?arg}/foo"))
 	assert.Equal(t, "/path/:arg/foo", SwaggerUriToGinUri("/path/{?arg*}/foo"))
+
+	// Make sure literal colons are escaped
+	assert.Equal(t, "/path/:arg\\\\:foo", SwaggerUriToGinUri("/path/{arg}:foo"))
 }
 
 func TestSwaggerUriToGorillaUri(t *testing.T) { // TODO