diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java
index a015dee2a21b..f1308e2b7e7d 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java
@@ -6524,6 +6524,9 @@ public String sanitizeName(final String name, String removeCharRegEx, ArrayList<
             // input.name => input_name
             modifiable = this.sanitizeValue(modifiable, "\\.", "_", exceptions);
 
+            // input:name => input_name
+            modifiable = this.sanitizeValue(modifiable, ":", "_", exceptions);
+
             // input-name => input_name
             modifiable = this.sanitizeValue(modifiable, "-", "_", exceptions);
 
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CrystalClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CrystalClientCodegen.java
index 684df587ffb5..422866c16b23 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CrystalClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CrystalClientCodegen.java
@@ -405,7 +405,7 @@ public String sanitizeModelName(String modelName) {
         String[] parts = modelName.split("::");
         ArrayList<String> new_parts = new ArrayList<String>();
         for (String part : parts) {
-            new_parts.add(sanitizeName(part));
+            new_parts.add(sanitizeName(part, "\\W", new ArrayList<>(List.of(":"))));
         }
         return String.join("::", new_parts);
     }
diff --git a/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/JavaModelTest.java b/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/JavaModelTest.java
index 91c36f642936..d9d3157d8be2 100644
--- a/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/JavaModelTest.java
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/JavaModelTest.java
@@ -274,10 +274,10 @@ public void restrictedCharactersPropertiesTest() {
 
         final CodegenProperty property = cm.vars.get(0);
         Assert.assertEquals(property.baseName, "@Some:restricted%characters#to!handle+");
-        Assert.assertEquals(property.getter, "getAtSomeColonRestrictedPercentCharactersHashToExclamationHandlePlus");
-        Assert.assertEquals(property.setter, "setAtSomeColonRestrictedPercentCharactersHashToExclamationHandlePlus");
+        Assert.assertEquals(property.getter, "getAtSomeRestrictedPercentCharactersHashToExclamationHandlePlus");
+        Assert.assertEquals(property.setter, "setAtSomeRestrictedPercentCharactersHashToExclamationHandlePlus");
         Assert.assertEquals(property.dataType, "Boolean");
-        Assert.assertEquals(property.name, "atSomeColonRestrictedPercentCharactersHashToExclamationHandlePlus");
+        Assert.assertEquals(property.name, "atSomeRestrictedPercentCharactersHashToExclamationHandlePlus");
         Assert.assertNull(property.defaultValue);
         Assert.assertEquals(property.baseType, "Boolean");
         Assert.assertFalse(property.required);
diff --git a/modules/openapi-generator/src/test/java/org/openapitools/codegen/typescript/fetch/TypeScriptFetchClientCodegenTest.java b/modules/openapi-generator/src/test/java/org/openapitools/codegen/typescript/fetch/TypeScriptFetchClientCodegenTest.java
index ac0560194f60..739d7277c818 100644
--- a/modules/openapi-generator/src/test/java/org/openapitools/codegen/typescript/fetch/TypeScriptFetchClientCodegenTest.java
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/typescript/fetch/TypeScriptFetchClientCodegenTest.java
@@ -133,6 +133,7 @@ public void toEnumVarName() {
         Assert.assertEquals(codegen.toEnumVarName("valid_var", "string"), "ValidVar");
         Assert.assertEquals(codegen.toEnumVarName("-valid_var+", "string"), "ValidVar");
         Assert.assertEquals(codegen.toEnumVarName("30valid_+var", "string"), "_30validVar");
+        Assert.assertEquals(codegen.toEnumVarName("VALID:var", "string"), "ValidVar");
 
         codegen = new TypeScriptFetchClientCodegen();
         codegen.additionalProperties().put(CodegenConstants.ENUM_PROPERTY_NAMING, "original");
@@ -142,6 +143,7 @@ public void toEnumVarName() {
         Assert.assertEquals(codegen.toEnumVarName("valid_var", "string"), "valid_var");
         Assert.assertEquals(codegen.toEnumVarName("-valid_var+", "string"), "valid_var");
         Assert.assertEquals(codegen.toEnumVarName("30valid_+var", "string"), "_30valid_var");
+        Assert.assertEquals(codegen.toEnumVarName("VALID:var", "string"), "VALID_var");
 
         codegen = new TypeScriptFetchClientCodegen();
         codegen.additionalProperties().put(CodegenConstants.ENUM_PROPERTY_NAMING, "UPPERCASE");
@@ -153,7 +155,7 @@ public void toEnumVarName() {
         Assert.assertEquals(codegen.toEnumVarName("-valid_+var", "string"), "MINUS_VALID_PLUS_VAR");
         Assert.assertEquals(codegen.toEnumVarName("-valid_var+", "string"), "MINUS_VALID_VAR_PLUS");
         Assert.assertEquals(codegen.toEnumVarName("30valid_+var", "string"), "_30VALID_PLUS_VAR");
-
+        Assert.assertEquals(codegen.toEnumVarName("VALID:var", "string"), "VALID_VAR");
     }
 
     @Test