diff --git a/.github/workflows/install-rust-and-protoc/action.yml b/.github/workflows/install-rust-and-protoc/action.yml
index e1222ffd9d..e8b21ab523 100644
--- a/.github/workflows/install-rust-and-protoc/action.yml
+++ b/.github/workflows/install-rust-and-protoc/action.yml
@@ -28,5 +28,5 @@ runs:
         - name: Install protoc (protobuf)
           uses: arduino/setup-protoc@v3
           with:
-              version: "25.1"
+              version: "25.5"
               repo-token: ${{ inputs.github-token }}
diff --git a/.github/workflows/java-cd.yml b/.github/workflows/java-cd.yml
index e9df283c50..4f84d9fb4f 100644
--- a/.github/workflows/java-cd.yml
+++ b/.github/workflows/java-cd.yml
@@ -105,7 +105,7 @@ jobs:
             - name: Install protoc (protobuf)
               uses: arduino/setup-protoc@v3
               with:
-                  version: "26.1"
+                  version: "28.1"
                   repo-token: ${{ secrets.GITHUB_TOKEN }}
 
             - name: Create secret key ring file
@@ -245,7 +245,7 @@ jobs:
             - name: Install protoc (protobuf)
               uses: arduino/setup-protoc@v3
               with:
-                  version: "26.1"
+                  version: "28.1"
                   repo-token: ${{ secrets.GITHUB_TOKEN }}
 
             - name: Start standalone Valkey server
diff --git a/.github/workflows/java.yml b/.github/workflows/java.yml
index 5106aec4ce..fa61580b3c 100644
--- a/.github/workflows/java.yml
+++ b/.github/workflows/java.yml
@@ -93,7 +93,7 @@ jobs:
             - name: Install protoc (protobuf)
               uses: arduino/setup-protoc@v3
               with:
-                  version: "26.1"
+                  version: "28.1"
                   repo-token: ${{ secrets.GITHUB_TOKEN }}
 
             - name: Build java client
@@ -161,7 +161,7 @@ jobs:
             - name: Install protoc (protobuf)
               uses: arduino/setup-protoc@v3
               with:
-                  version: "26.1"
+                  version: "28.1"
                   repo-token: ${{ secrets.GITHUB_TOKEN }}
 
             - name: Install Java
diff --git a/.github/workflows/pypi-cd.yml b/.github/workflows/pypi-cd.yml
index e69343f234..ed60c8ee24 100644
--- a/.github/workflows/pypi-cd.yml
+++ b/.github/workflows/pypi-cd.yml
@@ -176,8 +176,8 @@ jobs:
                         echo "Running on unsupported architecture: $ARCH. Expected one of: ['x86_64', 'aarch64']"
                         exit 1 
                       fi
-                      curl -LO $PB_REL/download/v3.20.3/protoc-3.20.3-linux-${PROTOC_ARCH}.zip
-                      unzip protoc-3.20.3-linux-${PROTOC_ARCH}.zip -d $HOME/.local
+                      curl -LO $PB_REL/download/v4.25.5/protoc-4.25.5-linux-${PROTOC_ARCH}.zip
+                      unzip protoc-4.25.5-linux-${PROTOC_ARCH}.zip -d $HOME/.local
                       export PATH="$PATH:$HOME/.local/bin"
 
             - name: Build Python wheels (macos)
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 576fd78fc5..ef7432d2ae 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 #### Changes
 
+* Java, Python: Bump protobuf (protoc) version ([#2421](https://github.com/valkey-io/valkey-glide/pull/2421))
+
 #### Breaking Changes
 
 #### Fixes
diff --git a/java/DEVELOPER.md b/java/DEVELOPER.md
index bd04f278af..9fd9a2af57 100644
--- a/java/DEVELOPER.md
+++ b/java/DEVELOPER.md
@@ -17,7 +17,7 @@ The Valkey GLIDE Java wrapper consists of both Java and Rust code. Rust bindings
 -   git
 -   GCC
 -   pkg-config
--   protoc (protobuf compiler) >= 26.1
+-   protoc (protobuf compiler) >= 28.1
 -   openssl
 -   openssl-dev
 -   rustup
@@ -64,17 +64,17 @@ Continue with **Install protobuf compiler** below.
 To install protobuf for MacOS, run:
 ```bash
 brew install protobuf
-# Check that the protobuf compiler version 26.1 or higher is installed
+# Check that the protobuf compiler version 28.1 or higher is installed
 protoc --version
 ```
 
 For the remaining systems, do the following:
 ```bash
 PB_REL="https://github.com/protocolbuffers/protobuf/releases"
-curl -LO $PB_REL/download/v26.1/protoc-26.1-linux-x86_64.zip
-unzip protoc-26.1-linux-x86_64.zip -d $HOME/.local
+curl -LO $PB_REL/download/v28.1/protoc-28.1-linux-x86_64.zip
+unzip protoc-28.1-linux-x86_64.zip -d $HOME/.local
 export PATH="$PATH:$HOME/.local/bin"
-# Check that the protobuf compiler version 26.1 or higher is installed
+# Check that the protobuf compiler version 28.1 or higher is installed
 protoc --version
 ```
 
@@ -165,7 +165,7 @@ Some troubleshooting issues:
     - Failed to find `cargo` after `rustup`.
     - No Protobuf compiler (protoc) found.
 - If build fails because of rust compiler fails, make sure submodules are updated using `git submodule update`.
-- If protobuf 26.0 or earlier is detected, upgrade to the latest protobuf release.
+- If protobuf 28.0 or earlier is detected, upgrade to the latest protobuf release.
 
 ## Running Examples App
 
diff --git a/java/client/build.gradle b/java/client/build.gradle
index 46fa8f4cee..a0ac9f2d2b 100644
--- a/java/client/build.gradle
+++ b/java/client/build.gradle
@@ -14,7 +14,7 @@ repositories {
 }
 
 dependencies {
-    implementation group: 'com.google.protobuf', name: 'protobuf-java', version: '4.27.1'
+    implementation group: 'com.google.protobuf', name: 'protobuf-java', version: '4.28.1'
     implementation group: 'org.apache.commons', name: 'commons-lang3', version: '3.13.0'
 
     implementation group: 'io.netty', name: 'netty-handler', version: '4.1.100.Final'
@@ -39,11 +39,11 @@ dependencies {
 
 ext {
     checkProtocVersion = { String output ->
-        // Line in format like: libprotoc 26.1
+        // Line in format like: libprotoc 28.1
         int majorVersion = Integer.parseInt(output.split(" ")[1].split("\\.")[0].trim());
         int minorVersion = Integer.parseInt(output.split(" ")[1].split("\\.")[1].trim());
-        if (majorVersion < 26 || (majorVersion == 26 && minorVersion < 1)) {
-            throw new GradleException("Protobuf compiler (protoc) version 26.1 or newer is required. Current version: $output");
+        if (majorVersion < 28) {
+            throw new GradleException("Protobuf compiler (protoc) version 28.0 or newer is required. Current version: $output");
         }
         return output.split(" ")[1]
     }
@@ -62,7 +62,7 @@ tasks.register('protobuf', Exec) {
             }
         } catch (Exception e) {
             if (e.getMessage().startsWith("A problem occurred starting process")) {
-                throw new GradleException("No Protobuf compiler (protoc) found. Protobuf compiler version 26.1 or newer is required.");
+                throw new GradleException("No Protobuf compiler (protoc) found. Protobuf compiler version 28.0 or newer is required.");
             }
             throw e
         }
diff --git a/python/DEVELOPER.md b/python/DEVELOPER.md
index 083ccda616..d4d93507a7 100644
--- a/python/DEVELOPER.md
+++ b/python/DEVELOPER.md
@@ -16,7 +16,7 @@ Software Dependencies
 -   git
 -   GCC
 -   pkg-config
--   protoc (protobuf compiler) >= v3.20.0
+-   protoc (protobuf compiler) >= v4.25.5
 -   openssl
 -   openssl-dev
 -   rustup
@@ -34,9 +34,9 @@ rustc --version
 # Install protobuf compiler
 PB_REL="https://github.com/protocolbuffers/protobuf/releases"
 # For other arch type from x86 example below, the signature of the curl url should be protoc-<version>-<os>-<arch>.zip,
-# e.g. protoc-3.20.3-linux-aarch_64.zip for ARM64.
-curl -LO $PB_REL/download/v3.20.3/protoc-3.20.3-linux-x86_64.zip
-unzip protoc-3.20.3-linux-x86_64.zip -d $HOME/.local
+# e.g. protoc-4.25.5-linux-aarch_64.zip for ARM64.
+curl -LO $PB_REL/download/v4.25.5/protoc-4.25.5-linux-x86_64.zip
+unzip protoc-4.25.5-linux-x86_64.zip -d $HOME/.local
 export PATH="$PATH:$HOME/.local/bin"
 # Check that the protobuf compiler is installed
 protoc --version
@@ -55,8 +55,8 @@ source "$HOME/.cargo/env"
 rustc --version
 # Install protobuf compiler
 PB_REL="https://github.com/protocolbuffers/protobuf/releases"
-curl -LO $PB_REL/download/v3.20.3/protoc-3.20.3-linux-x86_64.zip
-unzip protoc-3.20.3-linux-x86_64.zip -d $HOME/.local
+curl -LO $PB_REL/download/v4.25.5/protoc-4.25.5-linux-x86_64.zip
+unzip protoc-4.25.5-linux-x86_64.zip -d $HOME/.local
 export PATH="$PATH:$HOME/.local/bin"
 # Check that the protobuf compiler is installed
 protoc --version
diff --git a/python/requirements.txt b/python/requirements.txt
index 12eb7d5e2b..acbddacc5c 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -1,7 +1,7 @@
 async-timeout==4.0.2
 google-api-python-client==2.85.0
 maturin==0.13.0
-protobuf==3.20.*
+protobuf==4.25.*
 pytest==7.1.2
 pytest-asyncio==0.19.0
 typing_extensions==4.8.0