diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 08c8baf..6200616 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -13,8 +13,8 @@ jobs:
       matrix:
         rust:
           - stable
-          - 1.63.0 # MSRV for linux distributions (>= Debian 12)
-          # - nightly  # To keep the MSRV, we can't test with nightly as some downgraded crates fails to compile
+          - 1.75.0 # MSRV for linux distributions (>= Debian 12)
+          - nightly
         platform: [ubuntu-latest, windows-latest, macos-latest]
     runs-on: ${{ matrix.platform }}
     steps:
diff --git a/Cargo.toml b/Cargo.toml
index 60f293a..25f8146 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,7 +4,7 @@ version = "0.1.0"
 authors = ["Muhammad Mominul Huque <mominul2082@gmail.com>"]
 license = "MPL-2.0"
 edition = "2021"
-rust-version = "1.63.0"
+rust-version = "1.75.0"
 
 [lib]
 crate-type = ["lib", "staticlib"]
@@ -19,10 +19,10 @@ codegen-units = 1
 ahash = { version = "0.8", features = ["serde"] }
 emojicon = { version = "0.5", features = ["custom"] }
 serde_json = "1.0"
-regex = "~1.9" # For maintaining MSRV
+regex = "1.9"
 stringplus = "0.1"
 edit-distance = "2.1"
-okkhor = "0.7"
+okkhor = "0.8"
 poriborton = "0.2"
 upodesh = "0.4"
 
diff --git a/riti.xcodeproj/project.pbxproj b/riti.xcodeproj/project.pbxproj
index 20b9596..b43cff8 100644
--- a/riti.xcodeproj/project.pbxproj
+++ b/riti.xcodeproj/project.pbxproj
@@ -1,6 +1,5 @@
 // !$*UTF8*$!
 {
-	/* generated with cargo-xcode 1.11.0 */
 	archiveVersion = 1;
 	classes = {
 	};
@@ -32,7 +31,7 @@
 
 /* Begin PBXFileReference section */
 		CA00B9937C4654FCDE10A9EB /* libriti.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = libriti.a; sourceTree = BUILT_PRODUCTS_DIR; };
-		CAF95239D67F3EF4668187A5 /* Cargo.toml */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; name = Cargo.toml; path = Cargo.toml; sourceTree = "<group>"; };
+		CAF95239D67F3EF4668187A5 /* Cargo.toml */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = Cargo.toml; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXGroup section */
@@ -124,7 +123,7 @@
 /* End PBXSourcesBuildPhase section */
 
 /* Begin XCBuildConfiguration section */
-		CA00A0F7F57D1056C3DE07A2 /* Release */ = {
+		CA004EBF41001056C3DE07A2 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CARGO_XCODE_CARGO_DEP_FILE_NAME = libriti.d;
@@ -132,13 +131,14 @@
 				INSTALL_GROUP = "";
 				INSTALL_MODE_FLAG = "";
 				INSTALL_OWNER = "";
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
 				PRODUCT_NAME = riti;
 				SKIP_INSTALL = YES;
 				SUPPORTED_PLATFORMS = "xrsimulator xros watchsimulator watchos macosx iphonesimulator iphoneos driverkit appletvsimulator appletvos";
 			};
-			name = Release;
+			name = Debug;
 		};
-		CA004EBF41001056C3DE07A2 /* Debug */ = {
+		CA00A0F7F57D1056C3DE07A2 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CARGO_XCODE_CARGO_DEP_FILE_NAME = libriti.d;
@@ -146,19 +146,20 @@
 				INSTALL_GROUP = "";
 				INSTALL_MODE_FLAG = "";
 				INSTALL_OWNER = "";
+				MACOSX_DEPLOYMENT_TARGET = 10.15;
 				PRODUCT_NAME = riti;
 				SKIP_INSTALL = YES;
 				SUPPORTED_PLATFORMS = "xrsimulator xros watchsimulator watchos macosx iphonesimulator iphoneos driverkit appletvsimulator appletvos";
 			};
-			name = Debug;
+			name = Release;
 		};
 		CAF7FE07D4CF3CC16B37690B /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				"ADDITIONAL_SDKS[sdk=a*]" = macosx;
 				"ADDITIONAL_SDKS[sdk=i*]" = macosx;
 				"ADDITIONAL_SDKS[sdk=w*]" = macosx;
 				"ADDITIONAL_SDKS[sdk=x*]" = macosx;
-				"ADDITIONAL_SDKS[sdk=a*]" = macosx;
 				ALWAYS_SEARCH_USER_PATHS = NO;
 				CARGO_TARGET_DIR = "$(PROJECT_TEMP_DIR)/cargo_target";
 				CARGO_XCODE_BUILD_PROFILE = release;
@@ -176,10 +177,10 @@
 		CAF8FE07D4CF228BE02872F8 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				"ADDITIONAL_SDKS[sdk=a*]" = macosx;
 				"ADDITIONAL_SDKS[sdk=i*]" = macosx;
 				"ADDITIONAL_SDKS[sdk=w*]" = macosx;
 				"ADDITIONAL_SDKS[sdk=x*]" = macosx;
-				"ADDITIONAL_SDKS[sdk=a*]" = macosx;
 				ALWAYS_SEARCH_USER_PATHS = NO;
 				CARGO_TARGET_DIR = "$(PROJECT_TEMP_DIR)/cargo_target";
 				CARGO_XCODE_BUILD_PROFILE = debug;
diff --git a/src/fixed/method.rs b/src/fixed/method.rs
index b6755a0..5d58458 100644
--- a/src/fixed/method.rs
+++ b/src/fixed/method.rs
@@ -560,6 +560,7 @@ fn is_left_standing_kar(c: char) -> bool {
 }
 
 #[cfg(test)]
+#[allow(unused_imports)]
 mod tests {
     use pretty_assertions::assert_eq;
     
@@ -622,6 +623,9 @@ mod tests {
         assert_eq!(method.suggestions, ["()"]);
     }
 
+    // The latest Rust version has incompatibility with the sorting order of the suggestions.
+    // So, this sensitive test are disabled for the MSRV.
+    #[rustversion::not(stable(1.75))]
     #[test]
     fn test_suggestion_smart_quote() {
         let mut method = FixedMethod::default();
@@ -645,7 +649,7 @@ mod tests {
 
     // The latest Rust version has incompatibility with the sorting order of the suggestions.
     // So, this sensitive test are disabled for the MSRV.
-    #[rustversion::not(stable(1.63))]
+    #[rustversion::not(stable(1.75))]
     #[test]
     fn test_emojis() {
         use crate::keycodes::VC_SEMICOLON; // Don't know why Rust 1.63 errors on unused import in CI.
@@ -697,7 +701,7 @@ mod tests {
 
     // The latest Rust version has incompatibility with the sorting order of the suggestions.
     // So, this sensitive test are disabled for the MSRV.
-    #[rustversion::not(stable(1.63))]
+    #[rustversion::not(stable(1.75))]
     #[test]
     fn test_suggestion_ansi() {
         let mut method = FixedMethod::default();