diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 0f9615a..9e72871 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -19,7 +19,7 @@ jobs:
           persist-credentials: false
 
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5
         with:
           go-version: '1.22'
 
@@ -39,7 +39,7 @@ jobs:
 
       - name: Install Go ${{ matrix.go }}
         if: matrix.go != 'tip'
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5
         with:
           go-version: ${{ matrix.go }}
 
@@ -57,7 +57,7 @@ jobs:
 
       - name: Install Go stable
         if: matrix.go == 'tip'
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5
         with:
           go-version: 1.x
 
diff --git a/.github/workflows/gotip_cron_test.yml b/.github/workflows/gotip_cron_test.yml
index e4894a3..eeec12c 100644
--- a/.github/workflows/gotip_cron_test.yml
+++ b/.github/workflows/gotip_cron_test.yml
@@ -17,7 +17,7 @@ jobs:
         with:
           persist-credentials: false
       - name: Install Go stable
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5
         with:
           go-version: 1.x
       - name: Install Go tip
diff --git a/example/http/Dockerfile b/example/http/Dockerfile
index 7d54601..7f955bb 100644
--- a/example/http/Dockerfile
+++ b/example/http/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.21.5
+FROM golang:1.21.5@sha256:672a2286da3ee7a854c3e0a56e0838918d0dbb1c18652992930293312de898a6
 
 WORKDIR /go/src/app
 
diff --git a/example/http/docker-compose.yml b/example/http/docker-compose.yml
index 0acd4aa..547d5d8 100644
--- a/example/http/docker-compose.yml
+++ b/example/http/docker-compose.yml
@@ -2,7 +2,7 @@
 version: '3.9'
 services:
   pyroscope:
-    image: 'grafana/pyroscope:latest'
+    image: 'grafana/pyroscope:latest@sha256:58e49fa3443195c7b95f5c9821ce8920a8627f215c2ccdf955a9cd78c76a3468'
     ports:
       - '4040:4040'