diff --git a/.github/workflows/cifuzz.yaml b/.github/workflows/cifuzz.yaml
index e4ce7d8..1e12257 100644
--- a/.github/workflows/cifuzz.yaml
+++ b/.github/workflows/cifuzz.yaml
@@ -15,7 +15,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5.5.0
         with:
-          go-version: 1.24.x
+          go-version: 1.25.x
           cache-dependency-path: |
             **/go.sum
             **/go.mod
diff --git a/.github/workflows/e2e.yaml b/.github/workflows/e2e.yaml
index a928b23..e294ec4 100644
--- a/.github/workflows/e2e.yaml
+++ b/.github/workflows/e2e.yaml
@@ -29,7 +29,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5.5.0
         with:
-          go-version: 1.24.x
+          go-version: 1.25.x
           cache-dependency-path: |
             **/go.sum
             **/go.mod
diff --git a/.github/workflows/scan.yml b/.github/workflows/scan.yml
index c2b01d2..2c4681d 100644
--- a/.github/workflows/scan.yml
+++ b/.github/workflows/scan.yml
@@ -35,7 +35,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5.5.0
         with:
-          go-version: 1.24.x
+          go-version: 1.25.x
           cache-dependency-path: |
             **/go.sum
             **/go.mod
diff --git a/DEVELOPMENT.md b/DEVELOPMENT.md
index f5ef02e..4bb0bd7 100644
--- a/DEVELOPMENT.md
+++ b/DEVELOPMENT.md
@@ -15,7 +15,7 @@ There are a number of dependencies required to be able to run the controller and
 
 In addition to the above, the following dependencies are also used by some of the `make` targets:
 
-- `controller-gen` (v0.7.0)
+- `controller-gen` (v0.19.0)
 - `gen-crd-api-reference-docs` (v0.3.0)
 - `setup-envtest` (latest)
 
@@ -24,7 +24,7 @@ If any of the above dependencies are not present on your system, the first invoc
 ## How to run the test suite
 
 Prerequisites:
-- Go >= 1.24
+- Go >= 1.25
 
 You can run the test suite by simply doing:
 
diff --git a/Dockerfile b/Dockerfile
index 36e61b6..4b7b867 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-ARG GO_VERSION=1.24
+ARG GO_VERSION=1.25
 ARG XX_VERSION=1.6.1
 
 FROM --platform=$BUILDPLATFORM tonistiigi/xx:${XX_VERSION} AS xx
@@ -30,7 +30,7 @@ COPY internal/ internal/
 ENV CGO_ENABLED=0
 RUN xx-go build -trimpath -a -o notification-controller main.go
 
-FROM alpine:3.21
+FROM alpine:3.22
 
 ARG TARGETPLATFORM
 
diff --git a/Makefile b/Makefile
index 990161b..e0c661d 100644
--- a/Makefile
+++ b/Makefile
@@ -93,8 +93,8 @@ api-docs: gen-crd-api-reference-docs
 
 # Run go mod tidy
 tidy:
-	cd api; rm -f go.sum; go mod tidy -compat=1.24
-	rm -f go.sum; go mod tidy -compat=1.24
+	cd api; rm -f go.sum; go mod tidy -compat=1.25
+	rm -f go.sum; go mod tidy -compat=1.25
 
 # Run go fmt against code
 fmt:
diff --git a/tests/fuzz/Dockerfile.builder b/tests/fuzz/Dockerfile.builder
index 13cf4f1..11119ec 100644
--- a/tests/fuzz/Dockerfile.builder
+++ b/tests/fuzz/Dockerfile.builder
@@ -1,9 +1,9 @@
 FROM gcr.io/oss-fuzz-base/base-builder-go
 
-RUN wget https://go.dev/dl/go1.24.0.linux-amd64.tar.gz \
+RUN wget https://go.dev/dl/go1.25.0.linux-amd64.tar.gz \
     && mkdir temp-go \
     && rm -rf /root/.go/* \
-    && tar -C temp-go/ -xzf go1.24.0.linux-amd64.tar.gz \
+    && tar -C temp-go/ -xzf go1.25.0.linux-amd64.tar.gz \
     && mv temp-go/go/* /root/.go/
 
 ENV SRC=$GOPATH/src/github.com/fluxcd/notification-controller